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Finding the Fourth Proportional to 25,859.99, 38,789.22 and 7,141.17

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Solution

The fourth proportional to 25,859.99, 38,789.22 and 7,141.17 is: 10,711.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,859.99 : 38,789.22 = 7,141.17 : x
  2. Step 2: Convert to fraction form
    25,859.99/38,789.22 = 7,141.17/x
  3. Step 3: Cross multiply
    25,859.99x = 38,789.22 × 7,141.17
  4. Step 4: Simplify right side
    25,859.99x = 277,000,586.43
  5. Step 5: Solve for x
    x = 277,000,586.43/25,859.99
  6. Step 6: Final answer
    x = 10,711.55

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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.