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Finding the Fourth Proportional to 61,698.72, 85,144.24 and 33,404.40

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Solution

The fourth proportional to 61,698.72, 85,144.24 and 33,404.40 is: 46,098.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,698.72 : 85,144.24 = 33,404.40 : x
  2. Step 2: Convert to fraction form
    61,698.72/85,144.24 = 33,404.40/x
  3. Step 3: Cross multiply
    61,698.72x = 85,144.24 × 33,404.40
  4. Step 4: Simplify right side
    61,698.72x = 2,844,192,250.66
  5. Step 5: Solve for x
    x = 2,844,192,250.66/61,698.72
  6. Step 6: Final answer
    x = 46,098.08

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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.