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Finding the Fourth Proportional to 111,216,900.80, 166,573,408.80 and 65,867,268.80

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Solution

The fourth proportional to 111,216,900.80, 166,573,408.80 and 65,867,268.80 is: 98,651,692.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,216,900.80 : 166,573,408.80 = 65,867,268.80 : x
  2. Step 2: Convert to fraction form
    111,216,900.80/166,573,408.80 = 65,867,268.80/x
  3. Step 3: Cross multiply
    111,216,900.80x = 166,573,408.80 × 65,867,268.80
  4. Step 4: Simplify right side
    111,216,900.80x = 10,971,735,492,361,886
  5. Step 5: Solve for x
    x = 10,971,735,492,361,886/111,216,900.80
  6. Step 6: Final answer
    x = 98,651,692.44

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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.