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Finding the Fourth Proportional to 393,697.90, 543,391.98 and 240,863.51

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Solution

The fourth proportional to 393,697.90, 543,391.98 and 240,863.51 is: 332,446.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,697.90 : 543,391.98 = 240,863.51 : x
  2. Step 2: Convert to fraction form
    393,697.90/543,391.98 = 240,863.51/x
  3. Step 3: Cross multiply
    393,697.90x = 543,391.98 × 240,863.51
  4. Step 4: Simplify right side
    393,697.90x = 130,883,296,891.69
  5. Step 5: Solve for x
    x = 130,883,296,891.69/393,697.90
  6. Step 6: Final answer
    x = 332,446.01

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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.