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Finding the Fourth Proportional to 28,593.71, 39,462.08 and 15,849.65

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Solution

The fourth proportional to 28,593.71, 39,462.08 and 15,849.65 is: 21,874.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,593.71 : 39,462.08 = 15,849.65 : x
  2. Step 2: Convert to fraction form
    28,593.71/39,462.08 = 15,849.65/x
  3. Step 3: Cross multiply
    28,593.71x = 39,462.08 × 15,849.65
  4. Step 4: Simplify right side
    28,593.71x = 625,460,175.68
  5. Step 5: Solve for x
    x = 625,460,175.68/28,593.71
  6. Step 6: Final answer
    x = 21,874.05

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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.