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Finding the Fourth Proportional to 206,859.70, 310,216.65 and 73,744.30

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Solution

The fourth proportional to 206,859.70, 310,216.65 and 73,744.30 is: 110,590.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,859.70 : 310,216.65 = 73,744.30 : x
  2. Step 2: Convert to fraction form
    206,859.70/310,216.65 = 73,744.30/x
  3. Step 3: Cross multiply
    206,859.70x = 310,216.65 × 73,744.30
  4. Step 4: Simplify right side
    206,859.70x = 22,876,709,702.60
  5. Step 5: Solve for x
    x = 22,876,709,702.60/206,859.70
  6. Step 6: Final answer
    x = 110,590.46

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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.