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Finding the Fourth Proportional to 25,808.92, 38,691.43 and 11,763.99

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Solution

The fourth proportional to 25,808.92, 38,691.43 and 11,763.99 is: 17,635.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,808.92 : 38,691.43 = 11,763.99 : x
  2. Step 2: Convert to fraction form
    25,808.92/38,691.43 = 11,763.99/x
  3. Step 3: Cross multiply
    25,808.92x = 38,691.43 × 11,763.99
  4. Step 4: Simplify right side
    25,808.92x = 455,165,566.20
  5. Step 5: Solve for x
    x = 455,165,566.20/25,808.92
  6. Step 6: Final answer
    x = 17,635.98

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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.