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Finding the Fourth Proportional to 71,467.44, 98,631.13 and 39,646.59

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Solution

The fourth proportional to 71,467.44, 98,631.13 and 39,646.59 is: 54,715.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,467.44 : 98,631.13 = 39,646.59 : x
  2. Step 2: Convert to fraction form
    71,467.44/98,631.13 = 39,646.59/x
  3. Step 3: Cross multiply
    71,467.44x = 98,631.13 × 39,646.59
  4. Step 4: Simplify right side
    71,467.44x = 3,910,388,391.77
  5. Step 5: Solve for x
    x = 3,910,388,391.77/71,467.44
  6. Step 6: Final answer
    x = 54,715.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.