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Finding the Fourth Proportional to 618,268.41, 853,219.28 and 360,138.75

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Solution

The fourth proportional to 618,268.41, 853,219.28 and 360,138.75 is: 496,996.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,268.41 : 853,219.28 = 360,138.75 : x
  2. Step 2: Convert to fraction form
    618,268.41/853,219.28 = 360,138.75/x
  3. Step 3: Cross multiply
    618,268.41x = 853,219.28 × 360,138.75
  4. Step 4: Simplify right side
    618,268.41x = 307,277,323,174.41
  5. Step 5: Solve for x
    x = 307,277,323,174.41/618,268.41
  6. Step 6: Final answer
    x = 496,996.64

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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.