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Finding the Fourth Proportional to 7,221.17, 9,965.23 and 4,034.47

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Solution

The fourth proportional to 7,221.17, 9,965.23 and 4,034.47 is: 5,567.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,221.17 : 9,965.23 = 4,034.47 : x
  2. Step 2: Convert to fraction form
    7,221.17/9,965.23 = 4,034.47/x
  3. Step 3: Cross multiply
    7,221.17x = 9,965.23 × 4,034.47
  4. Step 4: Simplify right side
    7,221.17x = 40,204,463.47
  5. Step 5: Solve for x
    x = 40,204,463.47/7,221.17
  6. Step 6: Final answer
    x = 5,567.58

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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.