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Finding the Fourth Proportional to 17,411.60, 26,121.60 and 5,724.20

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Solution

The fourth proportional to 17,411.60, 26,121.60 and 5,724.20 is: 8,587.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,411.60 : 26,121.60 = 5,724.20 : x
  2. Step 2: Convert to fraction form
    17,411.60/26,121.60 = 5,724.20/x
  3. Step 3: Cross multiply
    17,411.60x = 26,121.60 × 5,724.20
  4. Step 4: Simplify right side
    17,411.60x = 149,525,262.72
  5. Step 5: Solve for x
    x = 149,525,262.72/17,411.60
  6. Step 6: Final answer
    x = 8,587.68

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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.