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Finding the Fourth Proportional to 73,884.20, 110,826.30 and 42,703.40

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Solution

The fourth proportional to 73,884.20, 110,826.30 and 42,703.40 is: 64,055.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,884.20 : 110,826.30 = 42,703.40 : x
  2. Step 2: Convert to fraction form
    73,884.20/110,826.30 = 42,703.40/x
  3. Step 3: Cross multiply
    73,884.20x = 110,826.30 × 42,703.40
  4. Step 4: Simplify right side
    73,884.20x = 4,732,659,819.42
  5. Step 5: Solve for x
    x = 4,732,659,819.42/73,884.20
  6. Step 6: Final answer
    x = 64,055.10

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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.