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Finding the Fourth Proportional to 186,671.16, 279,919.17 and 68,259.69

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Solution

The fourth proportional to 186,671.16, 279,919.17 and 68,259.69 is: 102,357.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,671.16 : 279,919.17 = 68,259.69 : x
  2. Step 2: Convert to fraction form
    186,671.16/279,919.17 = 68,259.69/x
  3. Step 3: Cross multiply
    186,671.16x = 279,919.17 × 68,259.69
  4. Step 4: Simplify right side
    186,671.16x = 19,107,195,769.26
  5. Step 5: Solve for x
    x = 19,107,195,769.26/186,671.16
  6. Step 6: Final answer
    x = 102,357.51

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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.