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Finding the Fourth Proportional to 7,691.97, 11,559.59 and 4,572.53

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Solution

The fourth proportional to 7,691.97, 11,559.59 and 4,572.53 is: 6,871.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,691.97 : 11,559.59 = 4,572.53 : x
  2. Step 2: Convert to fraction form
    7,691.97/11,559.59 = 4,572.53/x
  3. Step 3: Cross multiply
    7,691.97x = 11,559.59 × 4,572.53
  4. Step 4: Simplify right side
    7,691.97x = 52,856,642.64
  5. Step 5: Solve for x
    x = 52,856,642.64/7,691.97
  6. Step 6: Final answer
    x = 6,871.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.