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Finding the Fourth Proportional to 73,250.80, 109,854.60 and 28,862.80

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Solution

The fourth proportional to 73,250.80, 109,854.60 and 28,862.80 is: 43,285.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,250.80 : 109,854.60 = 28,862.80 : x
  2. Step 2: Convert to fraction form
    73,250.80/109,854.60 = 28,862.80/x
  3. Step 3: Cross multiply
    73,250.80x = 109,854.60 × 28,862.80
  4. Step 4: Simplify right side
    73,250.80x = 3,170,711,348.88
  5. Step 5: Solve for x
    x = 3,170,711,348.88/73,250.80
  6. Step 6: Final answer
    x = 43,285.69

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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.