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Finding the Fourth Proportional to 72,793.76, 108,987.88 and 37,177.96

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Solution

The fourth proportional to 72,793.76, 108,987.88 and 37,177.96 is: 55,663.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,793.76 : 108,987.88 = 37,177.96 : x
  2. Step 2: Convert to fraction form
    72,793.76/108,987.88 = 37,177.96/x
  3. Step 3: Cross multiply
    72,793.76x = 108,987.88 × 37,177.96
  4. Step 4: Simplify right side
    72,793.76x = 4,051,947,043.12
  5. Step 5: Solve for x
    x = 4,051,947,043.12/72,793.76
  6. Step 6: Final answer
    x = 55,663.38

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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.