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Finding the Fourth Proportional to 25,586.60, 38,423.10 and 16,860.20

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Solution

The fourth proportional to 25,586.60, 38,423.10 and 16,860.20 is: 25,318.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,586.60 : 38,423.10 = 16,860.20 : x
  2. Step 2: Convert to fraction form
    25,586.60/38,423.10 = 16,860.20/x
  3. Step 3: Cross multiply
    25,586.60x = 38,423.10 × 16,860.20
  4. Step 4: Simplify right side
    25,586.60x = 647,821,150.62
  5. Step 5: Solve for x
    x = 647,821,150.62/25,586.60
  6. Step 6: Final answer
    x = 25,318.77

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.