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Finding the Fourth Proportional to 118,056.84, 162,978.66 and 80,017.44

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Solution

The fourth proportional to 118,056.84, 162,978.66 and 80,017.44 is: 110,464.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,056.84 : 162,978.66 = 80,017.44 : x
  2. Step 2: Convert to fraction form
    118,056.84/162,978.66 = 80,017.44/x
  3. Step 3: Cross multiply
    118,056.84x = 162,978.66 × 80,017.44
  4. Step 4: Simplify right side
    118,056.84x = 13,041,135,147.83
  5. Step 5: Solve for x
    x = 13,041,135,147.83/118,056.84
  6. Step 6: Final answer
    x = 110,464.88

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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.