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Finding the Fourth Proportional to 611,535.40, 844,318.54 and 397,286.08

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Solution

The fourth proportional to 611,535.40, 844,318.54 and 397,286.08 is: 548,514.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,535.40 : 844,318.54 = 397,286.08 : x
  2. Step 2: Convert to fraction form
    611,535.40/844,318.54 = 397,286.08/x
  3. Step 3: Cross multiply
    611,535.40x = 844,318.54 × 397,286.08
  4. Step 4: Simplify right side
    611,535.40x = 335,436,003,027.92
  5. Step 5: Solve for x
    x = 335,436,003,027.92/611,535.40
  6. Step 6: Final answer
    x = 548,514.45

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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.