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Finding the Fourth Proportional to 7,095.76, 9,791.12 and 3,952.56

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Solution

The fourth proportional to 7,095.76, 9,791.12 and 3,952.56 is: 5,453.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,095.76 : 9,791.12 = 3,952.56 : x
  2. Step 2: Convert to fraction form
    7,095.76/9,791.12 = 3,952.56/x
  3. Step 3: Cross multiply
    7,095.76x = 9,791.12 × 3,952.56
  4. Step 4: Simplify right side
    7,095.76x = 38,699,989.27
  5. Step 5: Solve for x
    x = 38,699,989.27/7,095.76
  6. Step 6: Final answer
    x = 5,453.96

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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.