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Finding the Fourth Proportional to 752,742,445.13, 1,128,725,978.15 and 337,863,601.16

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Solution

The fourth proportional to 752,742,445.13, 1,128,725,978.15 and 337,863,601.16 is: 506,621,389.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    752,742,445.13 : 1,128,725,978.15 = 337,863,601.16 : x
  2. Step 2: Convert to fraction form
    752,742,445.13/1,128,725,978.15 = 337,863,601.16/x
  3. Step 3: Cross multiply
    752,742,445.13x = 1,128,725,978.15 × 337,863,601.16
  4. Step 4: Simplify right side
    752,742,445.13x = 381,355,423,693,269,504
  5. Step 5: Solve for x
    x = 381,355,423,693,269,504/752,742,445.13
  6. Step 6: Final answer
    x = 506,621,389.78

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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.