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Finding the Fourth Proportional to 591,391.92, 887,087.78 and 142,112.79

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Solution

The fourth proportional to 591,391.92, 887,087.78 and 142,112.79 is: 213,169.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,391.92 : 887,087.78 = 142,112.79 : x
  2. Step 2: Convert to fraction form
    591,391.92/887,087.78 = 142,112.79/x
  3. Step 3: Cross multiply
    591,391.92x = 887,087.78 × 142,112.79
  4. Step 4: Simplify right side
    591,391.92x = 126,066,514,955.27
  5. Step 5: Solve for x
    x = 126,066,514,955.27/591,391.92
  6. Step 6: Final answer
    x = 213,169.15

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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.