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Finding the Fourth Proportional to 261,366.92, 392,003.52 and 69,242.62

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Solution

The fourth proportional to 261,366.92, 392,003.52 and 69,242.62 is: 103,851.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,366.92 : 392,003.52 = 69,242.62 : x
  2. Step 2: Convert to fraction form
    261,366.92/392,003.52 = 69,242.62/x
  3. Step 3: Cross multiply
    261,366.92x = 392,003.52 × 69,242.62
  4. Step 4: Simplify right side
    261,366.92x = 27,143,350,774.02
  5. Step 5: Solve for x
    x = 27,143,350,774.02/261,366.92
  6. Step 6: Final answer
    x = 103,851.52

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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.