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Finding the Fourth Proportional to 22,265.40, 30,713.94 and 15,202.20

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Solution

The fourth proportional to 22,265.40, 30,713.94 and 15,202.20 is: 20,970.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,265.40 : 30,713.94 = 15,202.20 : x
  2. Step 2: Convert to fraction form
    22,265.40/30,713.94 = 15,202.20/x
  3. Step 3: Cross multiply
    22,265.40x = 30,713.94 × 15,202.20
  4. Step 4: Simplify right side
    22,265.40x = 466,919,458.67
  5. Step 5: Solve for x
    x = 466,919,458.67/22,265.40
  6. Step 6: Final answer
    x = 20,970.63

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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.