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Finding the Fourth Proportional to 59,908.20, 89,935.20 and 30,310.80

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Solution

The fourth proportional to 59,908.20, 89,935.20 and 30,310.80 is: 45,503.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,908.20 : 89,935.20 = 30,310.80 : x
  2. Step 2: Convert to fraction form
    59,908.20/89,935.20 = 30,310.80/x
  3. Step 3: Cross multiply
    59,908.20x = 89,935.20 × 30,310.80
  4. Step 4: Simplify right side
    59,908.20x = 2,726,007,860.16
  5. Step 5: Solve for x
    x = 2,726,007,860.16/59,908.20
  6. Step 6: Final answer
    x = 45,503.08

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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.