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Finding the Fourth Proportional to 12,083,646,918.90, 18,125,470,378.35 and 12,083,646,918.90

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Solution

The fourth proportional to 12,083,646,918.90, 18,125,470,378.35 and 12,083,646,918.90 is: 18,125,470,378.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,083,646,918.90 : 18,125,470,378.35 = 12,083,646,918.90 : x
  2. Step 2: Convert to fraction form
    12,083,646,918.90/18,125,470,378.35 = 12,083,646,918.90/x
  3. Step 3: Cross multiply
    12,083,646,918.90x = 18,125,470,378.35 × 12,083,646,918.90
  4. Step 4: Simplify right side
    12,083,646,918.90x = 219,021,784,290,962,178,048
  5. Step 5: Solve for x
    x = 219,021,784,290,962,178,048/12,083,646,918.90
  6. Step 6: Final answer
    x = 18,125,470,378.35

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.