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Finding the Fourth Proportional to 10,918.48, 15,067.92 and 5,950.48

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Solution

The fourth proportional to 10,918.48, 15,067.92 and 5,950.48 is: 8,211.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,918.48 : 15,067.92 = 5,950.48 : x
  2. Step 2: Convert to fraction form
    10,918.48/15,067.92 = 5,950.48/x
  3. Step 3: Cross multiply
    10,918.48x = 15,067.92 × 5,950.48
  4. Step 4: Simplify right side
    10,918.48x = 89,661,356.60
  5. Step 5: Solve for x
    x = 89,661,356.60/10,918.48
  6. Step 6: Final answer
    x = 8,211.89

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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.