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Finding the Fourth Proportional to 17,812.60, 26,718.90 and 17,132.20

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Solution

The fourth proportional to 17,812.60, 26,718.90 and 17,132.20 is: 25,698.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,812.60 : 26,718.90 = 17,132.20 : x
  2. Step 2: Convert to fraction form
    17,812.60/26,718.90 = 17,132.20/x
  3. Step 3: Cross multiply
    17,812.60x = 26,718.90 × 17,132.20
  4. Step 4: Simplify right side
    17,812.60x = 457,753,538.58
  5. Step 5: Solve for x
    x = 457,753,538.58/17,812.60
  6. Step 6: Final answer
    x = 25,698.30

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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.