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Finding the Fourth Proportional to 73,751.33, 110,631.11 and 21,159.38

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Solution

The fourth proportional to 73,751.33, 110,631.11 and 21,159.38 is: 31,740.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,751.33 : 110,631.11 = 21,159.38 : x
  2. Step 2: Convert to fraction form
    73,751.33/110,631.11 = 21,159.38/x
  3. Step 3: Cross multiply
    73,751.33x = 110,631.11 × 21,159.38
  4. Step 4: Simplify right side
    73,751.33x = 2,340,885,037.36
  5. Step 5: Solve for x
    x = 2,340,885,037.36/73,751.33
  6. Step 6: Final answer
    x = 31,740.24

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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.