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Finding the Fourth Proportional to 15,187.88, 22,781.68 and 4,799.64

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Solution

The fourth proportional to 15,187.88, 22,781.68 and 4,799.64 is: 7,199.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,187.88 : 22,781.68 = 4,799.64 : x
  2. Step 2: Convert to fraction form
    15,187.88/22,781.68 = 4,799.64/x
  3. Step 3: Cross multiply
    15,187.88x = 22,781.68 × 4,799.64
  4. Step 4: Simplify right side
    15,187.88x = 109,343,862.60
  5. Step 5: Solve for x
    x = 109,343,862.60/15,187.88
  6. Step 6: Final answer
    x = 7,199.42

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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.