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Finding the Fourth Proportional to 111,157.89, 153,397.89 and 60,856.89

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Solution

The fourth proportional to 111,157.89, 153,397.89 and 60,856.89 is: 83,982.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,157.89 : 153,397.89 = 60,856.89 : x
  2. Step 2: Convert to fraction form
    111,157.89/153,397.89 = 60,856.89/x
  3. Step 3: Cross multiply
    111,157.89x = 153,397.89 × 60,856.89
  4. Step 4: Simplify right side
    111,157.89x = 9,335,318,517.96
  5. Step 5: Solve for x
    x = 9,335,318,517.96/111,157.89
  6. Step 6: Final answer
    x = 83,982.51

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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.