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Finding the Fourth Proportional to 57,820.92, 86,689.20 and 39,054.38

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Solution

The fourth proportional to 57,820.92, 86,689.20 and 39,054.38 is: 58,553.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,820.92 : 86,689.20 = 39,054.38 : x
  2. Step 2: Convert to fraction form
    57,820.92/86,689.20 = 39,054.38/x
  3. Step 3: Cross multiply
    57,820.92x = 86,689.20 × 39,054.38
  4. Step 4: Simplify right side
    57,820.92x = 3,385,592,958.70
  5. Step 5: Solve for x
    x = 3,385,592,958.70/57,820.92
  6. Step 6: Final answer
    x = 58,553.08

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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.