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Finding the Fourth Proportional to 170,203.70, 234,879.12 and 93,721.20

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Solution

The fourth proportional to 170,203.70, 234,879.12 and 93,721.20 is: 129,334.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,203.70 : 234,879.12 = 93,721.20 : x
  2. Step 2: Convert to fraction form
    170,203.70/234,879.12 = 93,721.20/x
  3. Step 3: Cross multiply
    170,203.70x = 234,879.12 × 93,721.20
  4. Step 4: Simplify right side
    170,203.70x = 22,013,152,981.34
  5. Step 5: Solve for x
    x = 22,013,152,981.34/170,203.70
  6. Step 6: Final answer
    x = 129,334.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.