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Finding the Fourth Proportional to 119,718.87, 165,212.01 and 68,734.92

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Solution

The fourth proportional to 119,718.87, 165,212.01 and 68,734.92 is: 94,854.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,718.87 : 165,212.01 = 68,734.92 : x
  2. Step 2: Convert to fraction form
    119,718.87/165,212.01 = 68,734.92/x
  3. Step 3: Cross multiply
    119,718.87x = 165,212.01 × 68,734.92
  4. Step 4: Simplify right side
    119,718.87x = 11,355,834,290.39
  5. Step 5: Solve for x
    x = 11,355,834,290.39/119,718.87
  6. Step 6: Final answer
    x = 94,854.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.