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Finding the Fourth Proportional to 103,882.55, 155,665.26 and 61,679.52

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Solution

The fourth proportional to 103,882.55, 155,665.26 and 61,679.52 is: 92,425.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,882.55 : 155,665.26 = 61,679.52 : x
  2. Step 2: Convert to fraction form
    103,882.55/155,665.26 = 61,679.52/x
  3. Step 3: Cross multiply
    103,882.55x = 155,665.26 × 61,679.52
  4. Step 4: Simplify right side
    103,882.55x = 9,601,358,517.48
  5. Step 5: Solve for x
    x = 9,601,358,517.48/103,882.55
  6. Step 6: Final answer
    x = 92,425.14

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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.