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Finding the Fourth Proportional to 24,356.80, 36,535.20 and 7,940.80

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Solution

The fourth proportional to 24,356.80, 36,535.20 and 7,940.80 is: 11,911.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    24,356.80 : 36,535.20 = 7,940.80 : x
  2. Step 2: Convert to fraction form
    24,356.80/36,535.20 = 7,940.80/x
  3. Step 3: Cross multiply
    24,356.80x = 36,535.20 × 7,940.80
  4. Step 4: Simplify right side
    24,356.80x = 290,118,716.16
  5. Step 5: Solve for x
    x = 290,118,716.16/24,356.80
  6. Step 6: Final answer
    x = 11,911.20

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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.