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Finding the Fourth Proportional to 48,808.90, 73,212.99 and 13,747.78

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Solution

The fourth proportional to 48,808.90, 73,212.99 and 13,747.78 is: 20,621.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,808.90 : 73,212.99 = 13,747.78 : x
  2. Step 2: Convert to fraction form
    48,808.90/73,212.99 = 13,747.78/x
  3. Step 3: Cross multiply
    48,808.90x = 73,212.99 × 13,747.78
  4. Step 4: Simplify right side
    48,808.90x = 1,006,516,079.66
  5. Step 5: Solve for x
    x = 1,006,516,079.66/48,808.90
  6. Step 6: Final answer
    x = 20,621.57

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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.