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Finding the Fourth Proportional to 148,898.52, 205,512.36 and 91,587.12

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Solution

The fourth proportional to 148,898.52, 205,512.36 and 91,587.12 is: 126,410.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,898.52 : 205,512.36 = 91,587.12 : x
  2. Step 2: Convert to fraction form
    148,898.52/205,512.36 = 91,587.12/x
  3. Step 3: Cross multiply
    148,898.52x = 205,512.36 × 91,587.12
  4. Step 4: Simplify right side
    148,898.52x = 18,822,285,176.80
  5. Step 5: Solve for x
    x = 18,822,285,176.80/148,898.52
  6. Step 6: Final answer
    x = 126,410.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.