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Finding the Fourth Proportional to 138,059.60, 206,628.60 and 96,587.60

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Solution

The fourth proportional to 138,059.60, 206,628.60 and 96,587.60 is: 144,559.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,059.60 : 206,628.60 = 96,587.60 : x
  2. Step 2: Convert to fraction form
    138,059.60/206,628.60 = 96,587.60/x
  3. Step 3: Cross multiply
    138,059.60x = 206,628.60 × 96,587.60
  4. Step 4: Simplify right side
    138,059.60x = 19,957,760,565.36
  5. Step 5: Solve for x
    x = 19,957,760,565.36/138,059.60
  6. Step 6: Final answer
    x = 144,559.02

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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.