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Finding the Fourth Proportional to 217,592.83, 326,192.42 and 77,318.65

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Solution

The fourth proportional to 217,592.83, 326,192.42 and 77,318.65 is: 115,908.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,592.83 : 326,192.42 = 77,318.65 : x
  2. Step 2: Convert to fraction form
    217,592.83/326,192.42 = 77,318.65/x
  3. Step 3: Cross multiply
    217,592.83x = 326,192.42 × 77,318.65
  4. Step 4: Simplify right side
    217,592.83x = 25,220,757,720.75
  5. Step 5: Solve for x
    x = 25,220,757,720.75/217,592.83
  6. Step 6: Final answer
    x = 115,908.04

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1.5x scale

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.