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Finding the Fourth Proportional to 124,320.82, 186,479.85 and 74,414.84

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Solution

The fourth proportional to 124,320.82, 186,479.85 and 74,414.84 is: 111,621.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,320.82 : 186,479.85 = 74,414.84 : x
  2. Step 2: Convert to fraction form
    124,320.82/186,479.85 = 74,414.84/x
  3. Step 3: Cross multiply
    124,320.82x = 186,479.85 × 74,414.84
  4. Step 4: Simplify right side
    124,320.82x = 13,876,868,667.17
  5. Step 5: Solve for x
    x = 13,876,868,667.17/124,320.82
  6. Step 6: Final answer
    x = 111,621.44

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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.