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Finding the Fourth Proportional to 19,472.71, 26,872.45 and 10,974.97

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Solution

The fourth proportional to 19,472.71, 26,872.45 and 10,974.97 is: 15,145.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,472.71 : 26,872.45 = 10,974.97 : x
  2. Step 2: Convert to fraction form
    19,472.71/26,872.45 = 10,974.97/x
  3. Step 3: Cross multiply
    19,472.71x = 26,872.45 × 10,974.97
  4. Step 4: Simplify right side
    19,472.71x = 294,924,332.58
  5. Step 5: Solve for x
    x = 294,924,332.58/19,472.71
  6. Step 6: Final answer
    x = 15,145.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.