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Finding the Fourth Proportional to 326,610.14, 489,724.52 and 126,696.92

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Solution

The fourth proportional to 326,610.14, 489,724.52 and 126,696.92 is: 189,971.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,610.14 : 489,724.52 = 126,696.92 : x
  2. Step 2: Convert to fraction form
    326,610.14/489,724.52 = 126,696.92/x
  3. Step 3: Cross multiply
    326,610.14x = 489,724.52 × 126,696.92
  4. Step 4: Simplify right side
    326,610.14x = 62,046,588,332.48
  5. Step 5: Solve for x
    x = 62,046,588,332.48/326,610.14
  6. Step 6: Final answer
    x = 189,971.41

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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.