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Finding the Fourth Proportional to 61,699.78, 85,145.34 and 33,404.86

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Solution

The fourth proportional to 61,699.78, 85,145.34 and 33,404.86 is: 46,098.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,699.78 : 85,145.34 = 33,404.86 : x
  2. Step 2: Convert to fraction form
    61,699.78/85,145.34 = 33,404.86/x
  3. Step 3: Cross multiply
    61,699.78x = 85,145.34 × 33,404.86
  4. Step 4: Simplify right side
    61,699.78x = 2,844,268,162.35
  5. Step 5: Solve for x
    x = 2,844,268,162.35/61,699.78
  6. Step 6: Final answer
    x = 46,098.51

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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.