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Finding the Fourth Proportional to 70,618.62, 105,876.57 and 33,159.39

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Solution

The fourth proportional to 70,618.62, 105,876.57 and 33,159.39 is: 49,714.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,618.62 : 105,876.57 = 33,159.39 : x
  2. Step 2: Convert to fraction form
    70,618.62/105,876.57 = 33,159.39/x
  3. Step 3: Cross multiply
    70,618.62x = 105,876.57 × 33,159.39
  4. Step 4: Simplify right side
    70,618.62x = 3,510,802,476.49
  5. Step 5: Solve for x
    x = 3,510,802,476.49/70,618.62
  6. Step 6: Final answer
    x = 49,714.97

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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.