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Finding the Fourth Proportional to 58,387.20, 87,451.20 and 48,019.20

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Solution

The fourth proportional to 58,387.20, 87,451.20 and 48,019.20 is: 71,922.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,387.20 : 87,451.20 = 48,019.20 : x
  2. Step 2: Convert to fraction form
    58,387.20/87,451.20 = 48,019.20/x
  3. Step 3: Cross multiply
    58,387.20x = 87,451.20 × 48,019.20
  4. Step 4: Simplify right side
    58,387.20x = 4,199,336,663.04
  5. Step 5: Solve for x
    x = 4,199,336,663.04/58,387.20
  6. Step 6: Final answer
    x = 71,922.21

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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.