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Finding the Fourth Proportional to 165,642.43, 248,480.88 and 45,699.39

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Solution

The fourth proportional to 165,642.43, 248,480.88 and 45,699.39 is: 68,553.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,642.43 : 248,480.88 = 45,699.39 : x
  2. Step 2: Convert to fraction form
    165,642.43/248,480.88 = 45,699.39/x
  3. Step 3: Cross multiply
    165,642.43x = 248,480.88 × 45,699.39
  4. Step 4: Simplify right side
    165,642.43x = 11,355,423,171.76
  5. Step 5: Solve for x
    x = 11,355,423,171.76/165,642.43
  6. Step 6: Final answer
    x = 68,553.83

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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.