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Finding the Fourth Proportional to 326,121.45, 489,177.30 and 113,044.47

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Solution

The fourth proportional to 326,121.45, 489,177.30 and 113,044.47 is: 169,565.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,121.45 : 489,177.30 = 113,044.47 : x
  2. Step 2: Convert to fraction form
    326,121.45/489,177.30 = 113,044.47/x
  3. Step 3: Cross multiply
    326,121.45x = 489,177.30 × 113,044.47
  4. Step 4: Simplify right side
    326,121.45x = 55,298,788,614.53
  5. Step 5: Solve for x
    x = 55,298,788,614.53/326,121.45
  6. Step 6: Final answer
    x = 169,565.02

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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.