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Finding the Fourth Proportional to 326,057.90, 489,232.65 and 115,846.70

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Solution

The fourth proportional to 326,057.90, 489,232.65 and 115,846.70 is: 173,821.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,057.90 : 489,232.65 = 115,846.70 : x
  2. Step 2: Convert to fraction form
    326,057.90/489,232.65 = 115,846.70/x
  3. Step 3: Cross multiply
    326,057.90x = 489,232.65 × 115,846.70
  4. Step 4: Simplify right side
    326,057.90x = 56,675,988,034.76
  5. Step 5: Solve for x
    x = 56,675,988,034.76/326,057.90
  6. Step 6: Final answer
    x = 173,821.85

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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.