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Finding the Fourth Proportional to 9,772.20, 14,652.90 and 3,922.20

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Solution

The fourth proportional to 9,772.20, 14,652.90 and 3,922.20 is: 5,881.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,772.20 : 14,652.90 = 3,922.20 : x
  2. Step 2: Convert to fraction form
    9,772.20/14,652.90 = 3,922.20/x
  3. Step 3: Cross multiply
    9,772.20x = 14,652.90 × 3,922.20
  4. Step 4: Simplify right side
    9,772.20x = 57,471,604.38
  5. Step 5: Solve for x
    x = 57,471,604.38/9,772.20
  6. Step 6: Final answer
    x = 5,881.13

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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.