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Finding the Fourth Proportional to 573,309.60, 859,640.40 and 218,335.20

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Solution

The fourth proportional to 573,309.60, 859,640.40 and 218,335.20 is: 327,379.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,309.60 : 859,640.40 = 218,335.20 : x
  2. Step 2: Convert to fraction form
    573,309.60/859,640.40 = 218,335.20/x
  3. Step 3: Cross multiply
    573,309.60x = 859,640.40 × 218,335.20
  4. Step 4: Simplify right side
    573,309.60x = 187,689,758,662.08
  5. Step 5: Solve for x
    x = 187,689,758,662.08/573,309.60
  6. Step 6: Final answer
    x = 327,379.41

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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.