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Finding the Fourth Proportional to 110,745.80, 166,118.70 and 63,312.20

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Solution

The fourth proportional to 110,745.80, 166,118.70 and 63,312.20 is: 94,968.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,745.80 : 166,118.70 = 63,312.20 : x
  2. Step 2: Convert to fraction form
    110,745.80/166,118.70 = 63,312.20/x
  3. Step 3: Cross multiply
    110,745.80x = 166,118.70 × 63,312.20
  4. Step 4: Simplify right side
    110,745.80x = 10,517,340,358.14
  5. Step 5: Solve for x
    x = 10,517,340,358.14/110,745.80
  6. Step 6: Final answer
    x = 94,968.30

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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.