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Finding the Fourth Proportional to 118,805.12, 163,888.86 and 73,468.64

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Solution

The fourth proportional to 118,805.12, 163,888.86 and 73,468.64 is: 101,348.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,805.12 : 163,888.86 = 73,468.64 : x
  2. Step 2: Convert to fraction form
    118,805.12/163,888.86 = 73,468.64/x
  3. Step 3: Cross multiply
    118,805.12x = 163,888.86 × 73,468.64
  4. Step 4: Simplify right side
    118,805.12x = 12,040,691,655.35
  5. Step 5: Solve for x
    x = 12,040,691,655.35/118,805.12
  6. Step 6: Final answer
    x = 101,348.26

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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.