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Finding the Fourth Proportional to 25,794.60, 38,691.90 and 15,901.80

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Solution

The fourth proportional to 25,794.60, 38,691.90 and 15,901.80 is: 23,852.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,794.60 : 38,691.90 = 15,901.80 : x
  2. Step 2: Convert to fraction form
    25,794.60/38,691.90 = 15,901.80/x
  3. Step 3: Cross multiply
    25,794.60x = 38,691.90 × 15,901.80
  4. Step 4: Simplify right side
    25,794.60x = 615,270,855.42
  5. Step 5: Solve for x
    x = 615,270,855.42/25,794.60
  6. Step 6: Final answer
    x = 23,852.70

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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.