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Finding the Fourth Proportional to 573,346.20, 859,760.10 and 257,640.60

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Solution

The fourth proportional to 573,346.20, 859,760.10 and 257,640.60 is: 386,344.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,346.20 : 859,760.10 = 257,640.60 : x
  2. Step 2: Convert to fraction form
    573,346.20/859,760.10 = 257,640.60/x
  3. Step 3: Cross multiply
    573,346.20x = 859,760.10 × 257,640.60
  4. Step 4: Simplify right side
    573,346.20x = 221,509,108,020.06
  5. Step 5: Solve for x
    x = 221,509,108,020.06/573,346.20
  6. Step 6: Final answer
    x = 386,344.43

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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.