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Finding the Fourth Proportional to 218,386.28, 327,659.52 and 92,058.32

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Solution

The fourth proportional to 218,386.28, 327,659.52 and 92,058.32 is: 138,121.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,386.28 : 327,659.52 = 92,058.32 : x
  2. Step 2: Convert to fraction form
    218,386.28/327,659.52 = 92,058.32/x
  3. Step 3: Cross multiply
    218,386.28x = 327,659.52 × 92,058.32
  4. Step 4: Simplify right side
    218,386.28x = 30,163,784,943.21
  5. Step 5: Solve for x
    x = 30,163,784,943.21/218,386.28
  6. Step 6: Final answer
    x = 138,121.25

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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.