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Finding the Fourth Proportional to 292,652.67, 438,979.16 and 82,290.61

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Solution

The fourth proportional to 292,652.67, 438,979.16 and 82,290.61 is: 123,435.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,652.67 : 438,979.16 = 82,290.61 : x
  2. Step 2: Convert to fraction form
    292,652.67/438,979.16 = 82,290.61/x
  3. Step 3: Cross multiply
    292,652.67x = 438,979.16 × 82,290.61
  4. Step 4: Simplify right side
    292,652.67x = 36,123,862,853.69
  5. Step 5: Solve for x
    x = 36,123,862,853.69/292,652.67
  6. Step 6: Final answer
    x = 123,435.96

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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.