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Finding the Fourth Proportional to 169,838.36, 234,366.92 and 98,213.28

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Solution

The fourth proportional to 169,838.36, 234,366.92 and 98,213.28 is: 135,528.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,838.36 : 234,366.92 = 98,213.28 : x
  2. Step 2: Convert to fraction form
    169,838.36/234,366.92 = 98,213.28/x
  3. Step 3: Cross multiply
    169,838.36x = 234,366.92 × 98,213.28
  4. Step 4: Simplify right side
    169,838.36x = 23,017,943,936.70
  5. Step 5: Solve for x
    x = 23,017,943,936.70/169,838.36
  6. Step 6: Final answer
    x = 135,528.53

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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.