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Finding the Fourth Proportional to 163,218.54, 244,789.53 and 78,937.03

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Solution

The fourth proportional to 163,218.54, 244,789.53 and 78,937.03 is: 118,387.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,218.54 : 244,789.53 = 78,937.03 : x
  2. Step 2: Convert to fraction form
    163,218.54/244,789.53 = 78,937.03/x
  3. Step 3: Cross multiply
    163,218.54x = 244,789.53 × 78,937.03
  4. Step 4: Simplify right side
    163,218.54x = 19,322,958,473.30
  5. Step 5: Solve for x
    x = 19,322,958,473.30/163,218.54
  6. Step 6: Final answer
    x = 118,387.03

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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.