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Finding the Fourth Proportional to 53,959.51, 80,889.96 and 18,880.03

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Solution

The fourth proportional to 53,959.51, 80,889.96 and 18,880.03 is: 28,302.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,959.51 : 80,889.96 = 18,880.03 : x
  2. Step 2: Convert to fraction form
    53,959.51/80,889.96 = 18,880.03/x
  3. Step 3: Cross multiply
    53,959.51x = 80,889.96 × 18,880.03
  4. Step 4: Simplify right side
    53,959.51x = 1,527,204,871.50
  5. Step 5: Solve for x
    x = 1,527,204,871.50/53,959.51
  6. Step 6: Final answer
    x = 28,302.79

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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.