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Finding the Fourth Proportional to 326,070.10, 489,105.15 and 201,481.30

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Solution

The fourth proportional to 326,070.10, 489,105.15 and 201,481.30 is: 302,221.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,070.10 : 489,105.15 = 201,481.30 : x
  2. Step 2: Convert to fraction form
    326,070.10/489,105.15 = 201,481.30/x
  3. Step 3: Cross multiply
    326,070.10x = 489,105.15 × 201,481.30
  4. Step 4: Simplify right side
    326,070.10x = 98,545,541,458.70
  5. Step 5: Solve for x
    x = 98,545,541,458.70/326,070.10
  6. Step 6: Final answer
    x = 302,221.95

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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.