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Finding the Fourth Proportional to 82,572.70, 123,859.05 and 23,408.89

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Solution

The fourth proportional to 82,572.70, 123,859.05 and 23,408.89 is: 35,113.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,572.70 : 123,859.05 = 23,408.89 : x
  2. Step 2: Convert to fraction form
    82,572.70/123,859.05 = 23,408.89/x
  3. Step 3: Cross multiply
    82,572.70x = 123,859.05 × 23,408.89
  4. Step 4: Simplify right side
    82,572.70x = 2,899,402,316.18
  5. Step 5: Solve for x
    x = 2,899,402,316.18/82,572.70
  6. Step 6: Final answer
    x = 35,113.33

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Similar ratio
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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.