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Finding the Fourth Proportional to 188,908.57, 283,418 and 70,552.69

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Solution

The fourth proportional to 188,908.57, 283,418 and 70,552.69 is: 105,849.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,908.57 : 283,418 = 70,552.69 : x
  2. Step 2: Convert to fraction form
    188,908.57/283,418 = 70,552.69/x
  3. Step 3: Cross multiply
    188,908.57x = 283,418 × 70,552.69
  4. Step 4: Simplify right side
    188,908.57x = 19,995,902,294.42
  5. Step 5: Solve for x
    x = 19,995,902,294.42/188,908.57
  6. Step 6: Final answer
    x = 105,849.63

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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.