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Finding the Fourth Proportional to 100,362.39, 150,568.89 and 70,837.89

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Solution

The fourth proportional to 100,362.39, 150,568.89 and 70,837.89 is: 106,274.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,362.39 : 150,568.89 = 70,837.89 : x
  2. Step 2: Convert to fraction form
    100,362.39/150,568.89 = 70,837.89/x
  3. Step 3: Cross multiply
    100,362.39x = 150,568.89 × 70,837.89
  4. Step 4: Simplify right side
    100,362.39x = 10,665,981,714.40
  5. Step 5: Solve for x
    x = 10,665,981,714.40/100,362.39
  6. Step 6: Final answer
    x = 106,274.69

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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.