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Finding the Fourth Proportional to 5,422.38, 7,437.88 and 5,375.58

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Solution

The fourth proportional to 5,422.38, 7,437.88 and 5,375.58 is: 7,373.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,422.38 : 7,437.88 = 5,375.58 : x
  2. Step 2: Convert to fraction form
    5,422.38/7,437.88 = 5,375.58/x
  3. Step 3: Cross multiply
    5,422.38x = 7,437.88 × 5,375.58
  4. Step 4: Simplify right side
    5,422.38x = 39,982,918.97
  5. Step 5: Solve for x
    x = 39,982,918.97/5,422.38
  6. Step 6: Final answer
    x = 7,373.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.