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Finding the Fourth Proportional to 22,310.65, 30,790.26 and 12,751.95

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Solution

The fourth proportional to 22,310.65, 30,790.26 and 12,751.95 is: 17,598.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,310.65 : 30,790.26 = 12,751.95 : x
  2. Step 2: Convert to fraction form
    22,310.65/30,790.26 = 12,751.95/x
  3. Step 3: Cross multiply
    22,310.65x = 30,790.26 × 12,751.95
  4. Step 4: Simplify right side
    22,310.65x = 392,635,856.01
  5. Step 5: Solve for x
    x = 392,635,856.01/22,310.65
  6. Step 6: Final answer
    x = 17,598.58

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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.