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Finding the Fourth Proportional to 66,283.98, 99,425.97 and 54,572.61

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Solution

The fourth proportional to 66,283.98, 99,425.97 and 54,572.61 is: 81,858.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,283.98 : 99,425.97 = 54,572.61 : x
  2. Step 2: Convert to fraction form
    66,283.98/99,425.97 = 54,572.61/x
  3. Step 3: Cross multiply
    66,283.98x = 99,425.97 × 54,572.61
  4. Step 4: Simplify right side
    66,283.98x = 5,425,934,684.68
  5. Step 5: Solve for x
    x = 5,425,934,684.68/66,283.98
  6. Step 6: Final answer
    x = 81,858.92

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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.