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Finding the Fourth Proportional to 73,947.81, 110,877.28 and 28,915.52

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Solution

The fourth proportional to 73,947.81, 110,877.28 and 28,915.52 is: 43,355.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,947.81 : 110,877.28 = 28,915.52 : x
  2. Step 2: Convert to fraction form
    73,947.81/110,877.28 = 28,915.52/x
  3. Step 3: Cross multiply
    73,947.81x = 110,877.28 × 28,915.52
  4. Step 4: Simplify right side
    73,947.81x = 3,206,074,367.04
  5. Step 5: Solve for x
    x = 3,206,074,367.04/73,947.81
  6. Step 6: Final answer
    x = 43,355.91

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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.