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Finding the Fourth Proportional to 603,986.40, 906,562.80 and 367,790.40

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Solution

The fourth proportional to 603,986.40, 906,562.80 and 367,790.40 is: 552,040.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,986.40 : 906,562.80 = 367,790.40 : x
  2. Step 2: Convert to fraction form
    603,986.40/906,562.80 = 367,790.40/x
  3. Step 3: Cross multiply
    603,986.40x = 906,562.80 × 367,790.40
  4. Step 4: Simplify right side
    603,986.40x = 333,425,094,837.12
  5. Step 5: Solve for x
    x = 333,425,094,837.12/603,986.40
  6. Step 6: Final answer
    x = 552,040.73

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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.