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Finding the Fourth Proportional to 6,572.42, 9,860.20 and 2,189.92

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Solution

The fourth proportional to 6,572.42, 9,860.20 and 2,189.92 is: 3,285.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,572.42 : 9,860.20 = 2,189.92 : x
  2. Step 2: Convert to fraction form
    6,572.42/9,860.20 = 2,189.92/x
  3. Step 3: Cross multiply
    6,572.42x = 9,860.20 × 2,189.92
  4. Step 4: Simplify right side
    6,572.42x = 21,593,049.18
  5. Step 5: Solve for x
    x = 21,593,049.18/6,572.42
  6. Step 6: Final answer
    x = 3,285.40

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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.