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Finding the Fourth Proportional to 48,789.64, 67,309.79 and 38,677.50

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Solution

The fourth proportional to 48,789.64, 67,309.79 and 38,677.50 is: 53,359.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,789.64 : 67,309.79 = 38,677.50 : x
  2. Step 2: Convert to fraction form
    48,789.64/67,309.79 = 38,677.50/x
  3. Step 3: Cross multiply
    48,789.64x = 67,309.79 × 38,677.50
  4. Step 4: Simplify right side
    48,789.64x = 2,603,374,209.34
  5. Step 5: Solve for x
    x = 2,603,374,209.34/48,789.64
  6. Step 6: Final answer
    x = 53,359.16

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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.