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Finding the Fourth Proportional to 114,003.27, 171,039.51 and 80,787.60

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Solution

The fourth proportional to 114,003.27, 171,039.51 and 80,787.60 is: 121,205.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,003.27 : 171,039.51 = 80,787.60 : x
  2. Step 2: Convert to fraction form
    114,003.27/171,039.51 = 80,787.60/x
  3. Step 3: Cross multiply
    114,003.27x = 171,039.51 × 80,787.60
  4. Step 4: Simplify right side
    114,003.27x = 13,817,871,518.08
  5. Step 5: Solve for x
    x = 13,817,871,518.08/114,003.27
  6. Step 6: Final answer
    x = 121,205.92

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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.