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Finding the Fourth Proportional to 326,373.71, 489,449.68 and 113,091.86

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Solution

The fourth proportional to 326,373.71, 489,449.68 and 113,091.86 is: 169,599.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,373.71 : 489,449.68 = 113,091.86 : x
  2. Step 2: Convert to fraction form
    326,373.71/489,449.68 = 113,091.86/x
  3. Step 3: Cross multiply
    326,373.71x = 489,449.68 × 113,091.86
  4. Step 4: Simplify right side
    326,373.71x = 55,352,774,687.60
  5. Step 5: Solve for x
    x = 55,352,774,687.60/326,373.71
  6. Step 6: Final answer
    x = 169,599.37

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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.