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Finding the Fourth Proportional to 111,223.52, 153,487.68 and 60,921.44

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Solution

The fourth proportional to 111,223.52, 153,487.68 and 60,921.44 is: 84,071.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,223.52 : 153,487.68 = 60,921.44 : x
  2. Step 2: Convert to fraction form
    111,223.52/153,487.68 = 60,921.44/x
  3. Step 3: Cross multiply
    111,223.52x = 153,487.68 × 60,921.44
  4. Step 4: Simplify right side
    111,223.52x = 9,350,690,487.86
  5. Step 5: Solve for x
    x = 9,350,690,487.86/111,223.52
  6. Step 6: Final answer
    x = 84,071.16

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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.