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Finding the Fourth Proportional to 25,393.53, 38,114.87 and 12,255.15

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Solution

The fourth proportional to 25,393.53, 38,114.87 and 12,255.15 is: 18,394.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,393.53 : 38,114.87 = 12,255.15 : x
  2. Step 2: Convert to fraction form
    25,393.53/38,114.87 = 12,255.15/x
  3. Step 3: Cross multiply
    25,393.53x = 38,114.87 × 12,255.15
  4. Step 4: Simplify right side
    25,393.53x = 467,103,387.80
  5. Step 5: Solve for x
    x = 467,103,387.80/25,393.53
  6. Step 6: Final answer
    x = 18,394.58

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1.5x scale

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.