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Finding the Fourth Proportional to 109,355.88, 150,911.52 and 61,610.04

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Solution

The fourth proportional to 109,355.88, 150,911.52 and 61,610.04 is: 85,022.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,355.88 : 150,911.52 = 61,610.04 : x
  2. Step 2: Convert to fraction form
    109,355.88/150,911.52 = 61,610.04/x
  3. Step 3: Cross multiply
    109,355.88x = 150,911.52 × 61,610.04
  4. Step 4: Simplify right side
    109,355.88x = 9,297,664,783.66
  5. Step 5: Solve for x
    x = 9,297,664,783.66/109,355.88
  6. Step 6: Final answer
    x = 85,022.08

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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.