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Finding the Fourth Proportional to 87,208.40, 120,343.40 and 48,963.24

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Solution

The fourth proportional to 87,208.40, 120,343.40 and 48,963.24 is: 67,566.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,208.40 : 120,343.40 = 48,963.24 : x
  2. Step 2: Convert to fraction form
    87,208.40/120,343.40 = 48,963.24/x
  3. Step 3: Cross multiply
    87,208.40x = 120,343.40 × 48,963.24
  4. Step 4: Simplify right side
    87,208.40x = 5,892,402,776.62
  5. Step 5: Solve for x
    x = 5,892,402,776.62/87,208.40
  6. Step 6: Final answer
    x = 67,566.92

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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.