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Finding the Fourth Proportional to 16,717.97, 25,070.99 and 7,831.79

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Solution

The fourth proportional to 16,717.97, 25,070.99 and 7,831.79 is: 11,744.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,717.97 : 25,070.99 = 7,831.79 : x
  2. Step 2: Convert to fraction form
    16,717.97/25,070.99 = 7,831.79/x
  3. Step 3: Cross multiply
    16,717.97x = 25,070.99 × 7,831.79
  4. Step 4: Simplify right side
    16,717.97x = 196,350,658.27
  5. Step 5: Solve for x
    x = 196,350,658.27/16,717.97
  6. Step 6: Final answer
    x = 11,744.88

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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.