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Finding the Fourth Proportional to 22,817.80, 34,226.70 and 20,312.20

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Solution

The fourth proportional to 22,817.80, 34,226.70 and 20,312.20 is: 30,468.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,817.80 : 34,226.70 = 20,312.20 : x
  2. Step 2: Convert to fraction form
    22,817.80/34,226.70 = 20,312.20/x
  3. Step 3: Cross multiply
    22,817.80x = 34,226.70 × 20,312.20
  4. Step 4: Simplify right side
    22,817.80x = 695,219,575.74
  5. Step 5: Solve for x
    x = 695,219,575.74/22,817.80
  6. Step 6: Final answer
    x = 30,468.30

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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.