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Finding the Fourth Proportional to 39,355.78, 59,012.02 and 26,889.88

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Solution

The fourth proportional to 39,355.78, 59,012.02 and 26,889.88 is: 40,320.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,355.78 : 59,012.02 = 26,889.88 : x
  2. Step 2: Convert to fraction form
    39,355.78/59,012.02 = 26,889.88/x
  3. Step 3: Cross multiply
    39,355.78x = 59,012.02 × 26,889.88
  4. Step 4: Simplify right side
    39,355.78x = 1,586,826,136.36
  5. Step 5: Solve for x
    x = 1,586,826,136.36/39,355.78
  6. Step 6: Final answer
    x = 40,320.03

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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.