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Finding the Fourth Proportional to 63,716.50, 87,799.10 and 49,288.69

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Solution

The fourth proportional to 63,716.50, 87,799.10 and 49,288.69 is: 67,918.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,716.50 : 87,799.10 = 49,288.69 : x
  2. Step 2: Convert to fraction form
    63,716.50/87,799.10 = 49,288.69/x
  3. Step 3: Cross multiply
    63,716.50x = 87,799.10 × 49,288.69
  4. Step 4: Simplify right side
    63,716.50x = 4,327,502,622.18
  5. Step 5: Solve for x
    x = 4,327,502,622.18/63,716.50
  6. Step 6: Final answer
    x = 67,918.08

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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.