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Finding the Fourth Proportional to 170,717.90, 256,076.85 and 170,717.90

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Solution

The fourth proportional to 170,717.90, 256,076.85 and 170,717.90 is: 256,076.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,717.90 : 256,076.85 = 170,717.90 : x
  2. Step 2: Convert to fraction form
    170,717.90/256,076.85 = 170,717.90/x
  3. Step 3: Cross multiply
    170,717.90x = 256,076.85 × 170,717.90
  4. Step 4: Simplify right side
    170,717.90x = 43,716,902,070.62
  5. Step 5: Solve for x
    x = 43,716,902,070.62/170,717.90
  6. Step 6: Final answer
    x = 256,076.85

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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.