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Finding the Fourth Proportional to 111,702.64, 167,255.10 and 93,988

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Solution

The fourth proportional to 111,702.64, 167,255.10 and 93,988 is: 140,730.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,702.64 : 167,255.10 = 93,988 : x
  2. Step 2: Convert to fraction form
    111,702.64/167,255.10 = 93,988/x
  3. Step 3: Cross multiply
    111,702.64x = 167,255.10 × 93,988
  4. Step 4: Simplify right side
    111,702.64x = 15,719,972,338.80
  5. Step 5: Solve for x
    x = 15,719,972,338.80/111,702.64
  6. Step 6: Final answer
    x = 140,730.54

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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.