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Finding the Fourth Proportional to 618,538.85, 853,569.16 and 363,906.43

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Solution

The fourth proportional to 618,538.85, 853,569.16 and 363,906.43 is: 502,182.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,538.85 : 853,569.16 = 363,906.43 : x
  2. Step 2: Convert to fraction form
    618,538.85/853,569.16 = 363,906.43/x
  3. Step 3: Cross multiply
    618,538.85x = 853,569.16 × 363,906.43
  4. Step 4: Simplify right side
    618,538.85x = 310,619,303,954.17
  5. Step 5: Solve for x
    x = 310,619,303,954.17/618,538.85
  6. Step 6: Final answer
    x = 502,182.37

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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.