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Finding the Fourth Proportional to 111,642.62, 154,066.14 and 60,654.92

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Solution

The fourth proportional to 111,642.62, 154,066.14 and 60,654.92 is: 83,703.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,642.62 : 154,066.14 = 60,654.92 : x
  2. Step 2: Convert to fraction form
    111,642.62/154,066.14 = 60,654.92/x
  3. Step 3: Cross multiply
    111,642.62x = 154,066.14 × 60,654.92
  4. Step 4: Simplify right side
    111,642.62x = 9,344,868,626.08
  5. Step 5: Solve for x
    x = 9,344,868,626.08/111,642.62
  6. Step 6: Final answer
    x = 83,703.42

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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.