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Finding the Fourth Proportional to 486,721.70, 730,082.55 and 468,059.30

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Solution

The fourth proportional to 486,721.70, 730,082.55 and 468,059.30 is: 702,088.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,721.70 : 730,082.55 = 468,059.30 : x
  2. Step 2: Convert to fraction form
    486,721.70/730,082.55 = 468,059.30/x
  3. Step 3: Cross multiply
    486,721.70x = 730,082.55 × 468,059.30
  4. Step 4: Simplify right side
    486,721.70x = 341,721,927,295.22
  5. Step 5: Solve for x
    x = 341,721,927,295.22/486,721.70
  6. Step 6: Final answer
    x = 702,088.95

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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.