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Finding the Fourth Proportional to 393,551.52, 543,142.89 and 240,679.14

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Solution

The fourth proportional to 393,551.52, 543,142.89 and 240,679.14 is: 332,162.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,551.52 : 543,142.89 = 240,679.14 : x
  2. Step 2: Convert to fraction form
    393,551.52/543,142.89 = 240,679.14/x
  3. Step 3: Cross multiply
    393,551.52x = 543,142.89 × 240,679.14
  4. Step 4: Simplify right side
    393,551.52x = 130,723,163,662.32
  5. Step 5: Solve for x
    x = 130,723,163,662.32/393,551.52
  6. Step 6: Final answer
    x = 332,162.77

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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.