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Finding the Fourth Proportional to 111,177.97, 166,915.49 and 63,840.35

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Solution

The fourth proportional to 111,177.97, 166,915.49 and 63,840.35 is: 95,845.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,177.97 : 166,915.49 = 63,840.35 : x
  2. Step 2: Convert to fraction form
    111,177.97/166,915.49 = 63,840.35/x
  3. Step 3: Cross multiply
    111,177.97x = 166,915.49 × 63,840.35
  4. Step 4: Simplify right side
    111,177.97x = 10,655,943,400.11
  5. Step 5: Solve for x
    x = 10,655,943,400.11/111,177.97
  6. Step 6: Final answer
    x = 95,845.82

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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.