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Finding the Fourth Proportional to 18,801.60, 25,948.53 and 11,247.90

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Solution

The fourth proportional to 18,801.60, 25,948.53 and 11,247.90 is: 15,523.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,801.60 : 25,948.53 = 11,247.90 : x
  2. Step 2: Convert to fraction form
    18,801.60/25,948.53 = 11,247.90/x
  3. Step 3: Cross multiply
    18,801.60x = 25,948.53 × 11,247.90
  4. Step 4: Simplify right side
    18,801.60x = 291,866,470.59
  5. Step 5: Solve for x
    x = 291,866,470.59/18,801.60
  6. Step 6: Final answer
    x = 15,523.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.