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Finding the Fourth Proportional to 108,711.60, 163,067.40 and 73,282.20

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Solution

The fourth proportional to 108,711.60, 163,067.40 and 73,282.20 is: 109,923.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,711.60 : 163,067.40 = 73,282.20 : x
  2. Step 2: Convert to fraction form
    108,711.60/163,067.40 = 73,282.20/x
  3. Step 3: Cross multiply
    108,711.60x = 163,067.40 × 73,282.20
  4. Step 4: Simplify right side
    108,711.60x = 11,949,937,820.28
  5. Step 5: Solve for x
    x = 11,949,937,820.28/108,711.60
  6. Step 6: Final answer
    x = 109,923.30

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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.