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Finding the Fourth Proportional to 511,909.92, 767,976.93 and 156,951.63

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Solution

The fourth proportional to 511,909.92, 767,976.93 and 156,951.63 is: 235,461.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,909.92 : 767,976.93 = 156,951.63 : x
  2. Step 2: Convert to fraction form
    511,909.92/767,976.93 = 156,951.63/x
  3. Step 3: Cross multiply
    511,909.92x = 767,976.93 × 156,951.63
  4. Step 4: Simplify right side
    511,909.92x = 120,535,230,965.90
  5. Step 5: Solve for x
    x = 120,535,230,965.90/511,909.92
  6. Step 6: Final answer
    x = 235,461.80

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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.