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Finding the Fourth Proportional to 119,396.65, 164,790.90 and 68,443.57

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Solution

The fourth proportional to 119,396.65, 164,790.90 and 68,443.57 is: 94,465.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,396.65 : 164,790.90 = 68,443.57 : x
  2. Step 2: Convert to fraction form
    119,396.65/164,790.90 = 68,443.57/x
  3. Step 3: Cross multiply
    119,396.65x = 164,790.90 × 68,443.57
  4. Step 4: Simplify right side
    119,396.65x = 11,278,877,499.51
  5. Step 5: Solve for x
    x = 11,278,877,499.51/119,396.65
  6. Step 6: Final answer
    x = 94,465.61

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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.