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Finding the Fourth Proportional to 17,115.60, 25,716.60 and 15,214.80

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Solution

The fourth proportional to 17,115.60, 25,716.60 and 15,214.80 is: 22,860.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,115.60 : 25,716.60 = 15,214.80 : x
  2. Step 2: Convert to fraction form
    17,115.60/25,716.60 = 15,214.80/x
  3. Step 3: Cross multiply
    17,115.60x = 25,716.60 × 15,214.80
  4. Step 4: Simplify right side
    17,115.60x = 391,272,925.68
  5. Step 5: Solve for x
    x = 391,272,925.68/17,115.60
  6. Step 6: Final answer
    x = 22,860.60

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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.