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Finding the Fourth Proportional to 25,486.60, 38,229.90 and 17,710.60

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Solution

The fourth proportional to 25,486.60, 38,229.90 and 17,710.60 is: 26,565.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,486.60 : 38,229.90 = 17,710.60 : x
  2. Step 2: Convert to fraction form
    25,486.60/38,229.90 = 17,710.60/x
  3. Step 3: Cross multiply
    25,486.60x = 38,229.90 × 17,710.60
  4. Step 4: Simplify right side
    25,486.60x = 677,074,466.94
  5. Step 5: Solve for x
    x = 677,074,466.94/25,486.60
  6. Step 6: Final answer
    x = 26,565.90

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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.