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Finding the Fourth Proportional to 22,422.62, 30,942.03 and 12,862.02

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Solution

The fourth proportional to 22,422.62, 30,942.03 and 12,862.02 is: 17,748.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,422.62 : 30,942.03 = 12,862.02 : x
  2. Step 2: Convert to fraction form
    22,422.62/30,942.03 = 12,862.02/x
  3. Step 3: Cross multiply
    22,422.62x = 30,942.03 × 12,862.02
  4. Step 4: Simplify right side
    22,422.62x = 397,977,008.70
  5. Step 5: Solve for x
    x = 397,977,008.70/22,422.62
  6. Step 6: Final answer
    x = 17,748.91

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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.