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Finding the Fourth Proportional to 25,865.90, 38,800.22 and 11,059.91

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Solution

The fourth proportional to 25,865.90, 38,800.22 and 11,059.91 is: 16,590.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,865.90 : 38,800.22 = 11,059.91 : x
  2. Step 2: Convert to fraction form
    25,865.90/38,800.22 = 11,059.91/x
  3. Step 3: Cross multiply
    25,865.90x = 38,800.22 × 11,059.91
  4. Step 4: Simplify right side
    25,865.90x = 429,126,837.38
  5. Step 5: Solve for x
    x = 429,126,837.38/25,865.90
  6. Step 6: Final answer
    x = 16,590.45

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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.