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Finding the Fourth Proportional to 61,793.28, 85,315.68 and 36,650.88

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Solution

The fourth proportional to 61,793.28, 85,315.68 and 36,650.88 is: 50,602.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,793.28 : 85,315.68 = 36,650.88 : x
  2. Step 2: Convert to fraction form
    61,793.28/85,315.68 = 36,650.88/x
  3. Step 3: Cross multiply
    61,793.28x = 85,315.68 × 36,650.88
  4. Step 4: Simplify right side
    61,793.28x = 3,126,894,749.80
  5. Step 5: Solve for x
    x = 3,126,894,749.80/61,793.28
  6. Step 6: Final answer
    x = 50,602.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.