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Finding the Fourth Proportional to 539,660.40, 808,799.40 and 414,380.40

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Solution

The fourth proportional to 539,660.40, 808,799.40 and 414,380.40 is: 621,039.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,660.40 : 808,799.40 = 414,380.40 : x
  2. Step 2: Convert to fraction form
    539,660.40/808,799.40 = 414,380.40/x
  3. Step 3: Cross multiply
    539,660.40x = 808,799.40 × 414,380.40
  4. Step 4: Simplify right side
    539,660.40x = 335,150,618,891.76
  5. Step 5: Solve for x
    x = 335,150,618,891.76/539,660.40
  6. Step 6: Final answer
    x = 621,039.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.