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Finding the Fourth Proportional to 186,871.15, 280,343.63 and 68,543.52

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Solution

The fourth proportional to 186,871.15, 280,343.63 and 68,543.52 is: 102,828.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,871.15 : 280,343.63 = 68,543.52 : x
  2. Step 2: Convert to fraction form
    186,871.15/280,343.63 = 68,543.52/x
  3. Step 3: Cross multiply
    186,871.15x = 280,343.63 × 68,543.52
  4. Step 4: Simplify right side
    186,871.15x = 19,215,738,329.85
  5. Step 5: Solve for x
    x = 19,215,738,329.85/186,871.15
  6. Step 6: Final answer
    x = 102,828.81

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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.