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Finding the Fourth Proportional to 60,474.36, 90,711.82 and 18,354.80

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Solution

The fourth proportional to 60,474.36, 90,711.82 and 18,354.80 is: 27,532.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,474.36 : 90,711.82 = 18,354.80 : x
  2. Step 2: Convert to fraction form
    60,474.36/90,711.82 = 18,354.80/x
  3. Step 3: Cross multiply
    60,474.36x = 90,711.82 × 18,354.80
  4. Step 4: Simplify right side
    60,474.36x = 1,664,997,563.46
  5. Step 5: Solve for x
    x = 1,664,997,563.46/60,474.36
  6. Step 6: Final answer
    x = 27,532.29

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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.