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Finding the Fourth Proportional to 124,311.70, 186,358.20 and 74,411.65

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Solution

The fourth proportional to 124,311.70, 186,358.20 and 74,411.65 is: 111,552.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,311.70 : 186,358.20 = 74,411.65 : x
  2. Step 2: Convert to fraction form
    124,311.70/186,358.20 = 74,411.65/x
  3. Step 3: Cross multiply
    124,311.70x = 186,358.20 × 74,411.65
  4. Step 4: Simplify right side
    124,311.70x = 13,867,221,153.03
  5. Step 5: Solve for x
    x = 13,867,221,153.03/124,311.70
  6. Step 6: Final answer
    x = 111,552.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.