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Finding the Fourth Proportional to 171,013.98, 235,984.59 and 98,391.92

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Solution

The fourth proportional to 171,013.98, 235,984.59 and 98,391.92 is: 135,772.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,013.98 : 235,984.59 = 98,391.92 : x
  2. Step 2: Convert to fraction form
    171,013.98/235,984.59 = 98,391.92/x
  3. Step 3: Cross multiply
    171,013.98x = 235,984.59 × 98,391.92
  4. Step 4: Simplify right side
    171,013.98x = 23,218,975,720.59
  5. Step 5: Solve for x
    x = 23,218,975,720.59/171,013.98
  6. Step 6: Final answer
    x = 135,772.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.