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Finding the Fourth Proportional to 618,614.05, 853,674.52 and 339,207.33

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Solution

The fourth proportional to 618,614.05, 853,674.52 and 339,207.33 is: 468,099.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,614.05 : 853,674.52 = 339,207.33 : x
  2. Step 2: Convert to fraction form
    618,614.05/853,674.52 = 339,207.33/x
  3. Step 3: Cross multiply
    618,614.05x = 853,674.52 × 339,207.33
  4. Step 4: Simplify right side
    618,614.05x = 289,572,655,175.74
  5. Step 5: Solve for x
    x = 289,572,655,175.74/618,614.05
  6. Step 6: Final answer
    x = 468,099.06

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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.