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Finding the Fourth Proportional to 62,462.40, 93,687.84 and 20,909.76

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Solution

The fourth proportional to 62,462.40, 93,687.84 and 20,909.76 is: 31,362.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,462.40 : 93,687.84 = 20,909.76 : x
  2. Step 2: Convert to fraction form
    62,462.40/93,687.84 = 20,909.76/x
  3. Step 3: Cross multiply
    62,462.40x = 93,687.84 × 20,909.76
  4. Step 4: Simplify right side
    62,462.40x = 1,958,990,249.32
  5. Step 5: Solve for x
    x = 1,958,990,249.32/62,462.40
  6. Step 6: Final answer
    x = 31,362.71

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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.