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Finding the Fourth Proportional to 72,476.30, 108,717.87 and 59,802.55

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Solution

The fourth proportional to 72,476.30, 108,717.87 and 59,802.55 is: 89,706.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,476.30 : 108,717.87 = 59,802.55 : x
  2. Step 2: Convert to fraction form
    72,476.30/108,717.87 = 59,802.55/x
  3. Step 3: Cross multiply
    72,476.30x = 108,717.87 × 59,802.55
  4. Step 4: Simplify right side
    72,476.30x = 6,501,605,856.57
  5. Step 5: Solve for x
    x = 6,501,605,856.57/72,476.30
  6. Step 6: Final answer
    x = 89,706.65

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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.