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Finding the Fourth Proportional to 151,366.44, 208,885.71 and 87,741.15

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Solution

The fourth proportional to 151,366.44, 208,885.71 and 87,741.15 is: 121,082.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,366.44 : 208,885.71 = 87,741.15 : x
  2. Step 2: Convert to fraction form
    151,366.44/208,885.71 = 87,741.15/x
  3. Step 3: Cross multiply
    151,366.44x = 208,885.71 × 87,741.15
  4. Step 4: Simplify right side
    151,366.44x = 18,327,872,413.97
  5. Step 5: Solve for x
    x = 18,327,872,413.97/151,366.44
  6. Step 6: Final answer
    x = 121,082.80

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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.