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Finding the Fourth Proportional to 67,909.68, 93,650.04 and 52,780.68

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Solution

The fourth proportional to 67,909.68, 93,650.04 and 52,780.68 is: 72,786.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,909.68 : 93,650.04 = 52,780.68 : x
  2. Step 2: Convert to fraction form
    67,909.68/93,650.04 = 52,780.68/x
  3. Step 3: Cross multiply
    67,909.68x = 93,650.04 × 52,780.68
  4. Step 4: Simplify right side
    67,909.68x = 4,942,912,793.23
  5. Step 5: Solve for x
    x = 4,942,912,793.23/67,909.68
  6. Step 6: Final answer
    x = 72,786.57

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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.