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Finding the Fourth Proportional to 111,251.30, 153,526.97 and 65,951.54

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Solution

The fourth proportional to 111,251.30, 153,526.97 and 65,951.54 is: 91,013.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,251.30 : 153,526.97 = 65,951.54 : x
  2. Step 2: Convert to fraction form
    111,251.30/153,526.97 = 65,951.54/x
  3. Step 3: Cross multiply
    111,251.30x = 153,526.97 × 65,951.54
  4. Step 4: Simplify right side
    111,251.30x = 10,125,339,773.28
  5. Step 5: Solve for x
    x = 10,125,339,773.28/111,251.30
  6. Step 6: Final answer
    x = 91,013.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.