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Finding the Fourth Proportional to 186,312.17, 279,472.85 and 67,983.48

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Solution

The fourth proportional to 186,312.17, 279,472.85 and 67,983.48 is: 101,976.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,312.17 : 279,472.85 = 67,983.48 : x
  2. Step 2: Convert to fraction form
    186,312.17/279,472.85 = 67,983.48/x
  3. Step 3: Cross multiply
    186,312.17x = 279,472.85 × 67,983.48
  4. Step 4: Simplify right side
    186,312.17x = 18,999,536,568.60
  5. Step 5: Solve for x
    x = 18,999,536,568.60/186,312.17
  6. Step 6: Final answer
    x = 101,976.90

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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.