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Finding the Fourth Proportional to 73,235.28, 109,911.24 and 28,873.20

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Solution

The fourth proportional to 73,235.28, 109,911.24 and 28,873.20 is: 43,332.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,235.28 : 109,911.24 = 28,873.20 : x
  2. Step 2: Convert to fraction form
    73,235.28/109,911.24 = 28,873.20/x
  3. Step 3: Cross multiply
    73,235.28x = 109,911.24 × 28,873.20
  4. Step 4: Simplify right side
    73,235.28x = 3,173,489,214.77
  5. Step 5: Solve for x
    x = 3,173,489,214.77/73,235.28
  6. Step 6: Final answer
    x = 43,332.79

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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.