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Finding the Fourth Proportional to 168,861.28, 233,021.52 and 92,380

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Solution

The fourth proportional to 168,861.28, 233,021.52 and 92,380 is: 127,480.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,861.28 : 233,021.52 = 92,380 : x
  2. Step 2: Convert to fraction form
    168,861.28/233,021.52 = 92,380/x
  3. Step 3: Cross multiply
    168,861.28x = 233,021.52 × 92,380
  4. Step 4: Simplify right side
    168,861.28x = 21,526,528,017.60
  5. Step 5: Solve for x
    x = 21,526,528,017.60/168,861.28
  6. Step 6: Final answer
    x = 127,480.55

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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.