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Finding the Fourth Proportional to 706,358.20, 1,060,203.20 and 257,512.90

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Solution

The fourth proportional to 706,358.20, 1,060,203.20 and 257,512.90 is: 386,512.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,358.20 : 1,060,203.20 = 257,512.90 : x
  2. Step 2: Convert to fraction form
    706,358.20/1,060,203.20 = 257,512.90/x
  3. Step 3: Cross multiply
    706,358.20x = 1,060,203.20 × 257,512.90
  4. Step 4: Simplify right side
    706,358.20x = 273,016,000,621.28
  5. Step 5: Solve for x
    x = 273,016,000,621.28/706,358.20
  6. Step 6: Final answer
    x = 386,512.11

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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.