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Finding the Fourth Proportional to 170,748.20, 256,122.30 and 108,693.80

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Solution

The fourth proportional to 170,748.20, 256,122.30 and 108,693.80 is: 163,040.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,748.20 : 256,122.30 = 108,693.80 : x
  2. Step 2: Convert to fraction form
    170,748.20/256,122.30 = 108,693.80/x
  3. Step 3: Cross multiply
    170,748.20x = 256,122.30 × 108,693.80
  4. Step 4: Simplify right side
    170,748.20x = 27,838,906,051.74
  5. Step 5: Solve for x
    x = 27,838,906,051.74/170,748.20
  6. Step 6: Final answer
    x = 163,040.70

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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.