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Finding the Fourth Proportional to 108,872.64, 163,170.72 and 59,659.20

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Solution

The fourth proportional to 108,872.64, 163,170.72 and 59,659.20 is: 89,413.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,872.64 : 163,170.72 = 59,659.20 : x
  2. Step 2: Convert to fraction form
    108,872.64/163,170.72 = 59,659.20/x
  3. Step 3: Cross multiply
    108,872.64x = 163,170.72 × 59,659.20
  4. Step 4: Simplify right side
    108,872.64x = 9,734,634,618.62
  5. Step 5: Solve for x
    x = 9,734,634,618.62/108,872.64
  6. Step 6: Final answer
    x = 89,413.05

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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.