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Finding the Fourth Proportional to 73,402.15, 110,107.41 and 20,807.50

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Solution

The fourth proportional to 73,402.15, 110,107.41 and 20,807.50 is: 31,212.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,402.15 : 110,107.41 = 20,807.50 : x
  2. Step 2: Convert to fraction form
    73,402.15/110,107.41 = 20,807.50/x
  3. Step 3: Cross multiply
    73,402.15x = 110,107.41 × 20,807.50
  4. Step 4: Simplify right side
    73,402.15x = 2,291,059,933.58
  5. Step 5: Solve for x
    x = 2,291,059,933.58/73,402.15
  6. Step 6: Final answer
    x = 31,212.44

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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.