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Finding the Fourth Proportional to 7,750.71, 10,691.73 and 6,692.85

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Solution

The fourth proportional to 7,750.71, 10,691.73 and 6,692.85 is: 9,232.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,750.71 : 10,691.73 = 6,692.85 : x
  2. Step 2: Convert to fraction form
    7,750.71/10,691.73 = 6,692.85/x
  3. Step 3: Cross multiply
    7,750.71x = 10,691.73 × 6,692.85
  4. Step 4: Simplify right side
    7,750.71x = 71,558,145.13
  5. Step 5: Solve for x
    x = 71,558,145.13/7,750.71
  6. Step 6: Final answer
    x = 9,232.46

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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.