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Finding the Fourth Proportional to 568,139.64, 852,307.89 and 252,621.15

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Solution

The fourth proportional to 568,139.64, 852,307.89 and 252,621.15 is: 378,975.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,139.64 : 852,307.89 = 252,621.15 : x
  2. Step 2: Convert to fraction form
    568,139.64/852,307.89 = 252,621.15/x
  3. Step 3: Cross multiply
    568,139.64x = 852,307.89 × 252,621.15
  4. Step 4: Simplify right side
    568,139.64x = 215,310,999,325.87
  5. Step 5: Solve for x
    x = 215,310,999,325.87/568,139.64
  6. Step 6: Final answer
    x = 378,975.49

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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.