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Finding the Fourth Proportional to 73,634.49, 110,437.63 and 20,313.20

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Solution

The fourth proportional to 73,634.49, 110,437.63 and 20,313.20 is: 30,465.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,634.49 : 110,437.63 = 20,313.20 : x
  2. Step 2: Convert to fraction form
    73,634.49/110,437.63 = 20,313.20/x
  3. Step 3: Cross multiply
    73,634.49x = 110,437.63 × 20,313.20
  4. Step 4: Simplify right side
    73,634.49x = 2,243,341,665.72
  5. Step 5: Solve for x
    x = 2,243,341,665.72/73,634.49
  6. Step 6: Final answer
    x = 30,465.91

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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.