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Finding the Fourth Proportional to 73,438.65, 110,162.16 and 20,844

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Solution

The fourth proportional to 73,438.65, 110,162.16 and 20,844 is: 31,267.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,438.65 : 110,162.16 = 20,844 : x
  2. Step 2: Convert to fraction form
    73,438.65/110,162.16 = 20,844/x
  3. Step 3: Cross multiply
    73,438.65x = 110,162.16 × 20,844
  4. Step 4: Simplify right side
    73,438.65x = 2,296,220,063.04
  5. Step 5: Solve for x
    x = 2,296,220,063.04/73,438.65
  6. Step 6: Final answer
    x = 31,267.19

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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.