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Finding the Fourth Proportional to 61,129.66, 91,686.69 and 23,664.09

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Solution

The fourth proportional to 61,129.66, 91,686.69 and 23,664.09 is: 35,493.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,129.66 : 91,686.69 = 23,664.09 : x
  2. Step 2: Convert to fraction form
    61,129.66/91,686.69 = 23,664.09/x
  3. Step 3: Cross multiply
    61,129.66x = 91,686.69 × 23,664.09
  4. Step 4: Simplify right side
    61,129.66x = 2,169,682,083.96
  5. Step 5: Solve for x
    x = 2,169,682,083.96/61,129.66
  6. Step 6: Final answer
    x = 35,493.12

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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.