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Finding the Fourth Proportional to 7,221.35, 9,965.35 and 4,034.71

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Solution

The fourth proportional to 7,221.35, 9,965.35 and 4,034.71 is: 5,567.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,221.35 : 9,965.35 = 4,034.71 : x
  2. Step 2: Convert to fraction form
    7,221.35/9,965.35 = 4,034.71/x
  3. Step 3: Cross multiply
    7,221.35x = 9,965.35 × 4,034.71
  4. Step 4: Simplify right side
    7,221.35x = 40,207,227.30
  5. Step 5: Solve for x
    x = 40,207,227.30/7,221.35
  6. Step 6: Final answer
    x = 5,567.83

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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.