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Finding the Fourth Proportional to 111,710.70, 154,162.20 and 60,724.17

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Solution

The fourth proportional to 111,710.70, 154,162.20 and 60,724.17 is: 83,800.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,710.70 : 154,162.20 = 60,724.17 : x
  2. Step 2: Convert to fraction form
    111,710.70/154,162.20 = 60,724.17/x
  3. Step 3: Cross multiply
    111,710.70x = 154,162.20 × 60,724.17
  4. Step 4: Simplify right side
    111,710.70x = 9,361,370,869.56
  5. Step 5: Solve for x
    x = 9,361,370,869.56/111,710.70
  6. Step 6: Final answer
    x = 83,800.13

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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.