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Finding the Fourth Proportional to 109,625.80, 164,438.70 and 59,859.40

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Solution

The fourth proportional to 109,625.80, 164,438.70 and 59,859.40 is: 89,789.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,625.80 : 164,438.70 = 59,859.40 : x
  2. Step 2: Convert to fraction form
    109,625.80/164,438.70 = 59,859.40/x
  3. Step 3: Cross multiply
    109,625.80x = 164,438.70 × 59,859.40
  4. Step 4: Simplify right side
    109,625.80x = 9,843,201,918.78
  5. Step 5: Solve for x
    x = 9,843,201,918.78/109,625.80
  6. Step 6: Final answer
    x = 89,789.10

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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.