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Finding the Fourth Proportional to 28,296,972.90, 42,445,459.35 and 28,296,972.90

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Solution

The fourth proportional to 28,296,972.90, 42,445,459.35 and 28,296,972.90 is: 42,445,459.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,296,972.90 : 42,445,459.35 = 28,296,972.90 : x
  2. Step 2: Convert to fraction form
    28,296,972.90/42,445,459.35 = 28,296,972.90/x
  3. Step 3: Cross multiply
    28,296,972.90x = 42,445,459.35 × 28,296,972.90
  4. Step 4: Simplify right side
    28,296,972.90x = 1,201,078,012,955,001.50
  5. Step 5: Solve for x
    x = 1,201,078,012,955,001.50/28,296,972.90
  6. Step 6: Final answer
    x = 42,445,459.35

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Double scale
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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.