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Finding the Fourth Proportional to 59,889.80, 89,842.92 and 20,436.32

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Solution

The fourth proportional to 59,889.80, 89,842.92 and 20,436.32 is: 30,657.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,889.80 : 89,842.92 = 20,436.32 : x
  2. Step 2: Convert to fraction form
    59,889.80/89,842.92 = 20,436.32/x
  3. Step 3: Cross multiply
    59,889.80x = 89,842.92 × 20,436.32
  4. Step 4: Simplify right side
    59,889.80x = 1,836,058,662.85
  5. Step 5: Solve for x
    x = 1,836,058,662.85/59,889.80
  6. Step 6: Final answer
    x = 30,657.28

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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.