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Finding the Fourth Proportional to 496,535.28, 685,216.80 and 281,716.80

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Solution

The fourth proportional to 496,535.28, 685,216.80 and 281,716.80 is: 388,768.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,535.28 : 685,216.80 = 281,716.80 : x
  2. Step 2: Convert to fraction form
    496,535.28/685,216.80 = 281,716.80/x
  3. Step 3: Cross multiply
    496,535.28x = 685,216.80 × 281,716.80
  4. Step 4: Simplify right side
    496,535.28x = 193,037,084,202.24
  5. Step 5: Solve for x
    x = 193,037,084,202.24/496,535.28
  6. Step 6: Final answer
    x = 388,768.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.