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Finding the Fourth Proportional to 124,387.52, 186,621.60 and 74,459.84

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Solution

The fourth proportional to 124,387.52, 186,621.60 and 74,459.84 is: 111,713.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,387.52 : 186,621.60 = 74,459.84 : x
  2. Step 2: Convert to fraction form
    124,387.52/186,621.60 = 74,459.84/x
  3. Step 3: Cross multiply
    124,387.52x = 186,621.60 × 74,459.84
  4. Step 4: Simplify right side
    124,387.52x = 13,895,814,476.54
  5. Step 5: Solve for x
    x = 13,895,814,476.54/124,387.52
  6. Step 6: Final answer
    x = 111,713.90

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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.