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Finding the Fourth Proportional to 71,467.91, 98,629.01 and 39,634.91

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Solution

The fourth proportional to 71,467.91, 98,629.01 and 39,634.91 is: 54,698.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,467.91 : 98,629.01 = 39,634.91 : x
  2. Step 2: Convert to fraction form
    71,467.91/98,629.01 = 39,634.91/x
  3. Step 3: Cross multiply
    71,467.91x = 98,629.01 × 39,634.91
  4. Step 4: Simplify right side
    71,467.91x = 3,909,151,934.74
  5. Step 5: Solve for x
    x = 3,909,151,934.74/71,467.91
  6. Step 6: Final answer
    x = 54,698.00

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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.