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Finding the Fourth Proportional to 66,491.76, 99,306.54 and 60,239.28

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Solution

The fourth proportional to 66,491.76, 99,306.54 and 60,239.28 is: 89,968.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,491.76 : 99,306.54 = 60,239.28 : x
  2. Step 2: Convert to fraction form
    66,491.76/99,306.54 = 60,239.28/x
  3. Step 3: Cross multiply
    66,491.76x = 99,306.54 × 60,239.28
  4. Step 4: Simplify right side
    66,491.76x = 5,982,154,468.89
  5. Step 5: Solve for x
    x = 5,982,154,468.89/66,491.76
  6. Step 6: Final answer
    x = 89,968.36

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.