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Finding the Fourth Proportional to 91,323.92, 136,985.92 and 59,760.59

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Solution

The fourth proportional to 91,323.92, 136,985.92 and 59,760.59 is: 89,640.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,323.92 : 136,985.92 = 59,760.59 : x
  2. Step 2: Convert to fraction form
    91,323.92/136,985.92 = 59,760.59/x
  3. Step 3: Cross multiply
    91,323.92x = 136,985.92 × 59,760.59
  4. Step 4: Simplify right side
    91,323.92x = 8,186,358,566.56
  5. Step 5: Solve for x
    x = 8,186,358,566.56/91,323.92
  6. Step 6: Final answer
    x = 89,640.90

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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.