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Finding the Fourth Proportional to 104,721.20, 157,081.80 and 93,348.80

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Solution

The fourth proportional to 104,721.20, 157,081.80 and 93,348.80 is: 140,023.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,721.20 : 157,081.80 = 93,348.80 : x
  2. Step 2: Convert to fraction form
    104,721.20/157,081.80 = 93,348.80/x
  3. Step 3: Cross multiply
    104,721.20x = 157,081.80 × 93,348.80
  4. Step 4: Simplify right side
    104,721.20x = 14,663,397,531.84
  5. Step 5: Solve for x
    x = 14,663,397,531.84/104,721.20
  6. Step 6: Final answer
    x = 140,023.20

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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.