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Finding the Fourth Proportional to 48,306.80, 72,460.20 and 17,145.20

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Solution

The fourth proportional to 48,306.80, 72,460.20 and 17,145.20 is: 25,717.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,306.80 : 72,460.20 = 17,145.20 : x
  2. Step 2: Convert to fraction form
    48,306.80/72,460.20 = 17,145.20/x
  3. Step 3: Cross multiply
    48,306.80x = 72,460.20 × 17,145.20
  4. Step 4: Simplify right side
    48,306.80x = 1,242,344,621.04
  5. Step 5: Solve for x
    x = 1,242,344,621.04/48,306.80
  6. Step 6: Final answer
    x = 25,717.80

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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.