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Finding the Fourth Proportional to 60,610.80, 90,930.78 and 19,057.80

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Solution

The fourth proportional to 60,610.80, 90,930.78 and 19,057.80 is: 28,591.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,610.80 : 90,930.78 = 19,057.80 : x
  2. Step 2: Convert to fraction form
    60,610.80/90,930.78 = 19,057.80/x
  3. Step 3: Cross multiply
    60,610.80x = 90,930.78 × 19,057.80
  4. Step 4: Simplify right side
    60,610.80x = 1,732,940,619.08
  5. Step 5: Solve for x
    x = 1,732,940,619.08/60,610.80
  6. Step 6: Final answer
    x = 28,591.28

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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.