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Finding the Fourth Proportional to 392,081.36, 587,077.56 and 267,665.36

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Solution

The fourth proportional to 392,081.36, 587,077.56 and 267,665.36 is: 400,785.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,081.36 : 587,077.56 = 267,665.36 : x
  2. Step 2: Convert to fraction form
    392,081.36/587,077.56 = 267,665.36/x
  3. Step 3: Cross multiply
    392,081.36x = 587,077.56 × 267,665.36
  4. Step 4: Simplify right side
    392,081.36x = 157,140,326,445.32
  5. Step 5: Solve for x
    x = 157,140,326,445.32/392,081.36
  6. Step 6: Final answer
    x = 400,785.00

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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.