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Finding the Fourth Proportional to 8,387.74, 11,569.80 and 5,028.27

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Solution

The fourth proportional to 8,387.74, 11,569.80 and 5,028.27 is: 6,935.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,387.74 : 11,569.80 = 5,028.27 : x
  2. Step 2: Convert to fraction form
    8,387.74/11,569.80 = 5,028.27/x
  3. Step 3: Cross multiply
    8,387.74x = 11,569.80 × 5,028.27
  4. Step 4: Simplify right side
    8,387.74x = 58,176,078.25
  5. Step 5: Solve for x
    x = 58,176,078.25/8,387.74
  6. Step 6: Final answer
    x = 6,935.85

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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.