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Finding the Fourth Proportional to 326,626.17, 489,083.90 and 213,951.93

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Solution

The fourth proportional to 326,626.17, 489,083.90 and 213,951.93 is: 320,367.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,626.17 : 489,083.90 = 213,951.93 : x
  2. Step 2: Convert to fraction form
    326,626.17/489,083.90 = 213,951.93/x
  3. Step 3: Cross multiply
    326,626.17x = 489,083.90 × 213,951.93
  4. Step 4: Simplify right side
    326,626.17x = 104,640,443,267.17
  5. Step 5: Solve for x
    x = 104,640,443,267.17/326,626.17
  6. Step 6: Final answer
    x = 320,367.60

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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.