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Finding the Fourth Proportional to 625,369.92, 863,013.60 and 367,420.56

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Solution

The fourth proportional to 625,369.92, 863,013.60 and 367,420.56 is: 507,042.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,369.92 : 863,013.60 = 367,420.56 : x
  2. Step 2: Convert to fraction form
    625,369.92/863,013.60 = 367,420.56/x
  3. Step 3: Cross multiply
    625,369.92x = 863,013.60 × 367,420.56
  4. Step 4: Simplify right side
    625,369.92x = 317,088,940,199.62
  5. Step 5: Solve for x
    x = 317,088,940,199.62/625,369.92
  6. Step 6: Final answer
    x = 507,042.20

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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.