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Finding the Fourth Proportional to 109,908.67, 151,625.81 and 64,566.20

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Solution

The fourth proportional to 109,908.67, 151,625.81 and 64,566.20 is: 89,073.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,908.67 : 151,625.81 = 64,566.20 : x
  2. Step 2: Convert to fraction form
    109,908.67/151,625.81 = 64,566.20/x
  3. Step 3: Cross multiply
    109,908.67x = 151,625.81 × 64,566.20
  4. Step 4: Simplify right side
    109,908.67x = 9,789,901,292.66
  5. Step 5: Solve for x
    x = 9,789,901,292.66/109,908.67
  6. Step 6: Final answer
    x = 89,073.06

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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.