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Finding the Fourth Proportional to 23,281.80, 34,922.70 and 8,491.20

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Solution

The fourth proportional to 23,281.80, 34,922.70 and 8,491.20 is: 12,736.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,281.80 : 34,922.70 = 8,491.20 : x
  2. Step 2: Convert to fraction form
    23,281.80/34,922.70 = 8,491.20/x
  3. Step 3: Cross multiply
    23,281.80x = 34,922.70 × 8,491.20
  4. Step 4: Simplify right side
    23,281.80x = 296,535,630.24
  5. Step 5: Solve for x
    x = 296,535,630.24/23,281.80
  6. Step 6: Final answer
    x = 12,736.80

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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.