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Finding the Fourth Proportional to 66,592.01, 99,937.15 and 31,531.61

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Solution

The fourth proportional to 66,592.01, 99,937.15 and 31,531.61 is: 47,320.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,592.01 : 99,937.15 = 31,531.61 : x
  2. Step 2: Convert to fraction form
    66,592.01/99,937.15 = 31,531.61/x
  3. Step 3: Cross multiply
    66,592.01x = 99,937.15 × 31,531.61
  4. Step 4: Simplify right side
    66,592.01x = 3,151,178,659.80
  5. Step 5: Solve for x
    x = 3,151,178,659.80/66,592.01
  6. Step 6: Final answer
    x = 47,320.68

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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.