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Finding the Fourth Proportional to 170,917.62, 256,327.01 and 65,711.58

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Solution

The fourth proportional to 170,917.62, 256,327.01 and 65,711.58 is: 98,548.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,917.62 : 256,327.01 = 65,711.58 : x
  2. Step 2: Convert to fraction form
    170,917.62/256,327.01 = 65,711.58/x
  3. Step 3: Cross multiply
    170,917.62x = 256,327.01 × 65,711.58
  4. Step 4: Simplify right side
    170,917.62x = 16,843,652,823.78
  5. Step 5: Solve for x
    x = 16,843,652,823.78/170,917.62
  6. Step 6: Final answer
    x = 98,548.37

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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.