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Finding the Fourth Proportional to 22,913.80, 34,370.70 and 8,123.20

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Solution

The fourth proportional to 22,913.80, 34,370.70 and 8,123.20 is: 12,184.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,913.80 : 34,370.70 = 8,123.20 : x
  2. Step 2: Convert to fraction form
    22,913.80/34,370.70 = 8,123.20/x
  3. Step 3: Cross multiply
    22,913.80x = 34,370.70 × 8,123.20
  4. Step 4: Simplify right side
    22,913.80x = 279,200,070.24
  5. Step 5: Solve for x
    x = 279,200,070.24/22,913.80
  6. Step 6: Final answer
    x = 12,184.80

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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.