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Finding the Fourth Proportional to 496,535.22, 685,114.56 and 315,033.66

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Solution

The fourth proportional to 496,535.22, 685,114.56 and 315,033.66 is: 434,680.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,535.22 : 685,114.56 = 315,033.66 : x
  2. Step 2: Convert to fraction form
    496,535.22/685,114.56 = 315,033.66/x
  3. Step 3: Cross multiply
    496,535.22x = 685,114.56 × 315,033.66
  4. Step 4: Simplify right side
    496,535.22x = 215,834,147,356.09
  5. Step 5: Solve for x
    x = 215,834,147,356.09/496,535.22
  6. Step 6: Final answer
    x = 434,680.44

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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.