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Finding the Fourth Proportional to 109,267.20, 163,900.80 and 67,795.20

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Solution

The fourth proportional to 109,267.20, 163,900.80 and 67,795.20 is: 101,692.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,267.20 : 163,900.80 = 67,795.20 : x
  2. Step 2: Convert to fraction form
    109,267.20/163,900.80 = 67,795.20/x
  3. Step 3: Cross multiply
    109,267.20x = 163,900.80 × 67,795.20
  4. Step 4: Simplify right side
    109,267.20x = 11,111,687,516.16
  5. Step 5: Solve for x
    x = 11,111,687,516.16/109,267.20
  6. Step 6: Final answer
    x = 101,692.80

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1.5x scale

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.