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Finding the Fourth Proportional to 404,472.60, 606,708.90 and 217,848.60

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Solution

The fourth proportional to 404,472.60, 606,708.90 and 217,848.60 is: 326,772.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,472.60 : 606,708.90 = 217,848.60 : x
  2. Step 2: Convert to fraction form
    404,472.60/606,708.90 = 217,848.60/x
  3. Step 3: Cross multiply
    404,472.60x = 606,708.90 × 217,848.60
  4. Step 4: Simplify right side
    404,472.60x = 132,170,684,472.54
  5. Step 5: Solve for x
    x = 132,170,684,472.54/404,472.60
  6. Step 6: Final answer
    x = 326,772.90

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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.