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Finding the Fourth Proportional to 665,399.56, 918,253.78 and 363,593.56

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Solution

The fourth proportional to 665,399.56, 918,253.78 and 363,593.56 is: 501,760.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,399.56 : 918,253.78 = 363,593.56 : x
  2. Step 2: Convert to fraction form
    665,399.56/918,253.78 = 363,593.56/x
  3. Step 3: Cross multiply
    665,399.56x = 918,253.78 × 363,593.56
  4. Step 4: Simplify right side
    665,399.56x = 333,871,160,853.66
  5. Step 5: Solve for x
    x = 333,871,160,853.66/665,399.56
  6. Step 6: Final answer
    x = 501,760.42

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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.