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Finding the Fourth Proportional to 39,686.80, 59,530.20 and 16,301.20

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Solution

The fourth proportional to 39,686.80, 59,530.20 and 16,301.20 is: 24,451.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,686.80 : 59,530.20 = 16,301.20 : x
  2. Step 2: Convert to fraction form
    39,686.80/59,530.20 = 16,301.20/x
  3. Step 3: Cross multiply
    39,686.80x = 59,530.20 × 16,301.20
  4. Step 4: Simplify right side
    39,686.80x = 970,413,696.24
  5. Step 5: Solve for x
    x = 970,413,696.24/39,686.80
  6. Step 6: Final answer
    x = 24,451.80

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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.