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Finding the Fourth Proportional to 5,757.42, 7,939.80 and 5,327.88

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Solution

The fourth proportional to 5,757.42, 7,939.80 and 5,327.88 is: 7,347.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,757.42 : 7,939.80 = 5,327.88 : x
  2. Step 2: Convert to fraction form
    5,757.42/7,939.80 = 5,327.88/x
  3. Step 3: Cross multiply
    5,757.42x = 7,939.80 × 5,327.88
  4. Step 4: Simplify right side
    5,757.42x = 42,302,301.62
  5. Step 5: Solve for x
    x = 42,302,301.62/5,757.42
  6. Step 6: Final answer
    x = 7,347.44

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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.