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Finding the Fourth Proportional to 110,611.60, 165,787.80 and 82,877.20

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Solution

The fourth proportional to 110,611.60, 165,787.80 and 82,877.20 is: 124,218.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,611.60 : 165,787.80 = 82,877.20 : x
  2. Step 2: Convert to fraction form
    110,611.60/165,787.80 = 82,877.20/x
  3. Step 3: Cross multiply
    110,611.60x = 165,787.80 × 82,877.20
  4. Step 4: Simplify right side
    110,611.60x = 13,740,028,658.16
  5. Step 5: Solve for x
    x = 13,740,028,658.16/110,611.60
  6. Step 6: Final answer
    x = 124,218.70

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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.