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Finding the Fourth Proportional to 618,542.39, 926,238.54 and 407,540.63

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Solution

The fourth proportional to 618,542.39, 926,238.54 and 407,540.63 is: 610,273.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,542.39 : 926,238.54 = 407,540.63 : x
  2. Step 2: Convert to fraction form
    618,542.39/926,238.54 = 407,540.63/x
  3. Step 3: Cross multiply
    618,542.39x = 926,238.54 × 407,540.63
  4. Step 4: Simplify right side
    618,542.39x = 377,479,841,965.75
  5. Step 5: Solve for x
    x = 377,479,841,965.75/618,542.39
  6. Step 6: Final answer
    x = 610,273.19

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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.