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Finding the Fourth Proportional to 60,553.78, 90,824.91 and 18,993.46

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Solution

The fourth proportional to 60,553.78, 90,824.91 and 18,993.46 is: 28,488.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,553.78 : 90,824.91 = 18,993.46 : x
  2. Step 2: Convert to fraction form
    60,553.78/90,824.91 = 18,993.46/x
  3. Step 3: Cross multiply
    60,553.78x = 90,824.91 × 18,993.46
  4. Step 4: Simplify right side
    60,553.78x = 1,725,079,295.09
  5. Step 5: Solve for x
    x = 1,725,079,295.09/60,553.78
  6. Step 6: Final answer
    x = 28,488.38

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1.5x scale

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.