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Finding the Fourth Proportional to 414,591.96, 618,859.95 and 355,805.40

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Solution

The fourth proportional to 414,591.96, 618,859.95 and 355,805.40 is: 531,109.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,591.96 : 618,859.95 = 355,805.40 : x
  2. Step 2: Convert to fraction form
    414,591.96/618,859.95 = 355,805.40/x
  3. Step 3: Cross multiply
    414,591.96x = 618,859.95 × 355,805.40
  4. Step 4: Simplify right side
    414,591.96x = 220,193,712,053.73
  5. Step 5: Solve for x
    x = 220,193,712,053.73/414,591.96
  6. Step 6: Final answer
    x = 531,109.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.