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Finding the Fourth Proportional to 22,926.40, 34,415.20 and 21,422.40

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Solution

The fourth proportional to 22,926.40, 34,415.20 and 21,422.40 is: 32,157.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,926.40 : 34,415.20 = 21,422.40 : x
  2. Step 2: Convert to fraction form
    22,926.40/34,415.20 = 21,422.40/x
  3. Step 3: Cross multiply
    22,926.40x = 34,415.20 × 21,422.40
  4. Step 4: Simplify right side
    22,926.40x = 737,256,180.48
  5. Step 5: Solve for x
    x = 737,256,180.48/22,926.40
  6. Step 6: Final answer
    x = 32,157.52

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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.