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Finding the Fourth Proportional to 111,666.62, 154,100.14 and 60,678.88

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Solution

The fourth proportional to 111,666.62, 154,100.14 and 60,678.88 is: 83,736.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,666.62 : 154,100.14 = 60,678.88 : x
  2. Step 2: Convert to fraction form
    111,666.62/154,100.14 = 60,678.88/x
  3. Step 3: Cross multiply
    111,666.62x = 154,100.14 × 60,678.88
  4. Step 4: Simplify right side
    111,666.62x = 9,350,623,903.04
  5. Step 5: Solve for x
    x = 9,350,623,903.04/111,666.62
  6. Step 6: Final answer
    x = 83,736.97

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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.