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Finding the Fourth Proportional to 172,191.83, 258,287.81 and 53,863.65

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Solution

The fourth proportional to 172,191.83, 258,287.81 and 53,863.65 is: 80,795.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,191.83 : 258,287.81 = 53,863.65 : x
  2. Step 2: Convert to fraction form
    172,191.83/258,287.81 = 53,863.65/x
  3. Step 3: Cross multiply
    172,191.83x = 258,287.81 × 53,863.65
  4. Step 4: Simplify right side
    172,191.83x = 13,912,323,927.79
  5. Step 5: Solve for x
    x = 13,912,323,927.79/172,191.83
  6. Step 6: Final answer
    x = 80,795.50

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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.