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Finding the Fourth Proportional to 638,467,352.80, 957,701,029.20 and 638,467,352.80

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Solution

The fourth proportional to 638,467,352.80, 957,701,029.20 and 638,467,352.80 is: 957,701,029.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,467,352.80 : 957,701,029.20 = 638,467,352.80 : x
  2. Step 2: Convert to fraction form
    638,467,352.80/957,701,029.20 = 638,467,352.80/x
  3. Step 3: Cross multiply
    638,467,352.80x = 957,701,029.20 × 638,467,352.80
  4. Step 4: Simplify right side
    638,467,352.80x = 611,460,840,887,159,424
  5. Step 5: Solve for x
    x = 611,460,840,887,159,424/638,467,352.80
  6. Step 6: Final answer
    x = 957,701,029.20

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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.