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Finding the Fourth Proportional to 171,767.68, 257,388.76 and 91,817.02

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Solution

The fourth proportional to 171,767.68, 257,388.76 and 91,817.02 is: 137,585.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,767.68 : 257,388.76 = 91,817.02 : x
  2. Step 2: Convert to fraction form
    171,767.68/257,388.76 = 91,817.02/x
  3. Step 3: Cross multiply
    171,767.68x = 257,388.76 × 91,817.02
  4. Step 4: Simplify right side
    171,767.68x = 23,632,668,924.70
  5. Step 5: Solve for x
    x = 23,632,668,924.70/171,767.68
  6. Step 6: Final answer
    x = 137,585.07

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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.