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Finding the Fourth Proportional to 48,979.20, 73,468.80 and 12,043.20

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Solution

The fourth proportional to 48,979.20, 73,468.80 and 12,043.20 is: 18,064.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,979.20 : 73,468.80 = 12,043.20 : x
  2. Step 2: Convert to fraction form
    48,979.20/73,468.80 = 12,043.20/x
  3. Step 3: Cross multiply
    48,979.20x = 73,468.80 × 12,043.20
  4. Step 4: Simplify right side
    48,979.20x = 884,799,452.16
  5. Step 5: Solve for x
    x = 884,799,452.16/48,979.20
  6. Step 6: Final answer
    x = 18,064.80

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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.