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Finding the Fourth Proportional to 17,121.16, 25,685.66 and 7,260.76

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Solution

The fourth proportional to 17,121.16, 25,685.66 and 7,260.76 is: 10,892.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,121.16 : 25,685.66 = 7,260.76 : x
  2. Step 2: Convert to fraction form
    17,121.16/25,685.66 = 7,260.76/x
  3. Step 3: Cross multiply
    17,121.16x = 25,685.66 × 7,260.76
  4. Step 4: Simplify right side
    17,121.16x = 186,497,412.70
  5. Step 5: Solve for x
    x = 186,497,412.70/17,121.16
  6. Step 6: Final answer
    x = 10,892.80

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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.