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Finding the Fourth Proportional to 573,295.60, 859,619.40 and 218,321.20

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Solution

The fourth proportional to 573,295.60, 859,619.40 and 218,321.20 is: 327,358.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,295.60 : 859,619.40 = 218,321.20 : x
  2. Step 2: Convert to fraction form
    573,295.60/859,619.40 = 218,321.20/x
  3. Step 3: Cross multiply
    573,295.60x = 859,619.40 × 218,321.20
  4. Step 4: Simplify right side
    573,295.60x = 187,673,138,951.28
  5. Step 5: Solve for x
    x = 187,673,138,951.28/573,295.60
  6. Step 6: Final answer
    x = 327,358.42

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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.