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Finding the Fourth Proportional to 7,791.24, 10,748.82 and 4,957.86

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Solution

The fourth proportional to 7,791.24, 10,748.82 and 4,957.86 is: 6,839.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,791.24 : 10,748.82 = 4,957.86 : x
  2. Step 2: Convert to fraction form
    7,791.24/10,748.82 = 4,957.86/x
  3. Step 3: Cross multiply
    7,791.24x = 10,748.82 × 4,957.86
  4. Step 4: Simplify right side
    7,791.24x = 53,291,144.73
  5. Step 5: Solve for x
    x = 53,291,144.73/7,791.24
  6. Step 6: Final answer
    x = 6,839.88

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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.