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Finding the Fourth Proportional to 19,341.88, 26,691.78 and 10,958.38

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Solution

The fourth proportional to 19,341.88, 26,691.78 and 10,958.38 is: 15,122.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,341.88 : 26,691.78 = 10,958.38 : x
  2. Step 2: Convert to fraction form
    19,341.88/26,691.78 = 10,958.38/x
  3. Step 3: Cross multiply
    19,341.88x = 26,691.78 × 10,958.38
  4. Step 4: Simplify right side
    19,341.88x = 292,498,668.12
  5. Step 5: Solve for x
    x = 292,498,668.12/19,341.88
  6. Step 6: Final answer
    x = 15,122.56

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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.