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Finding the Fourth Proportional to 109,067.40, 163,406.70 and 67,465.80

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Solution

The fourth proportional to 109,067.40, 163,406.70 and 67,465.80 is: 101,078.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,067.40 : 163,406.70 = 67,465.80 : x
  2. Step 2: Convert to fraction form
    109,067.40/163,406.70 = 67,465.80/x
  3. Step 3: Cross multiply
    109,067.40x = 163,406.70 × 67,465.80
  4. Step 4: Simplify right side
    109,067.40x = 11,024,363,740.86
  5. Step 5: Solve for x
    x = 11,024,363,740.86/109,067.40
  6. Step 6: Final answer
    x = 101,078.45

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.