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Finding the Fourth Proportional to 59,978.40, 89,924.40 and 33,691.20

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Solution

The fourth proportional to 59,978.40, 89,924.40 and 33,691.20 is: 50,512.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,978.40 : 89,924.40 = 33,691.20 : x
  2. Step 2: Convert to fraction form
    59,978.40/89,924.40 = 33,691.20/x
  3. Step 3: Cross multiply
    59,978.40x = 89,924.40 × 33,691.20
  4. Step 4: Simplify right side
    59,978.40x = 3,029,660,945.28
  5. Step 5: Solve for x
    x = 3,029,660,945.28/59,978.40
  6. Step 6: Final answer
    x = 50,512.53

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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.