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Finding the Fourth Proportional to 31,191.96, 43,045.80 and 17,045.70

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Solution

The fourth proportional to 31,191.96, 43,045.80 and 17,045.70 is: 23,523.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,191.96 : 43,045.80 = 17,045.70 : x
  2. Step 2: Convert to fraction form
    31,191.96/43,045.80 = 17,045.70/x
  3. Step 3: Cross multiply
    31,191.96x = 43,045.80 × 17,045.70
  4. Step 4: Simplify right side
    31,191.96x = 733,745,793.06
  5. Step 5: Solve for x
    x = 733,745,793.06/31,191.96
  6. Step 6: Final answer
    x = 23,523.56

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Double scale
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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.