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Finding the Fourth Proportional to 618,350.19, 853,740.51 and 386,131.90

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Solution

The fourth proportional to 618,350.19, 853,740.51 and 386,131.90 is: 533,122.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,350.19 : 853,740.51 = 386,131.90 : x
  2. Step 2: Convert to fraction form
    618,350.19/853,740.51 = 386,131.90/x
  3. Step 3: Cross multiply
    618,350.19x = 853,740.51 × 386,131.90
  4. Step 4: Simplify right side
    618,350.19x = 329,656,445,233.27
  5. Step 5: Solve for x
    x = 329,656,445,233.27/618,350.19
  6. Step 6: Final answer
    x = 533,122.57

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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.