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Finding the Fourth Proportional to 192,046.85, 287,907.61 and 79,656.92

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Solution

The fourth proportional to 192,046.85, 287,907.61 and 79,656.92 is: 119,417.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,046.85 : 287,907.61 = 79,656.92 : x
  2. Step 2: Convert to fraction form
    192,046.85/287,907.61 = 79,656.92/x
  3. Step 3: Cross multiply
    192,046.85x = 287,907.61 × 79,656.92
  4. Step 4: Simplify right side
    192,046.85x = 22,933,831,818.48
  5. Step 5: Solve for x
    x = 22,933,831,818.48/192,046.85
  6. Step 6: Final answer
    x = 119,417.90

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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.