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Finding the Fourth Proportional to 137,272.40, 205,908.60 and 132,023.60

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Solution

The fourth proportional to 137,272.40, 205,908.60 and 132,023.60 is: 198,035.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,272.40 : 205,908.60 = 132,023.60 : x
  2. Step 2: Convert to fraction form
    137,272.40/205,908.60 = 132,023.60/x
  3. Step 3: Cross multiply
    137,272.40x = 205,908.60 × 132,023.60
  4. Step 4: Simplify right side
    137,272.40x = 27,184,794,642.96
  5. Step 5: Solve for x
    x = 27,184,794,642.96/137,272.40
  6. Step 6: Final answer
    x = 198,035.40

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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.