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Finding the Fourth Proportional to 638,103.42, 956,252.79 and 353,919.17

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Solution

The fourth proportional to 638,103.42, 956,252.79 and 353,919.17 is: 530,378.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,103.42 : 956,252.79 = 353,919.17 : x
  2. Step 2: Convert to fraction form
    638,103.42/956,252.79 = 353,919.17/x
  3. Step 3: Cross multiply
    638,103.42x = 956,252.79 × 353,919.17
  4. Step 4: Simplify right side
    638,103.42x = 338,436,196,137.62
  5. Step 5: Solve for x
    x = 338,436,196,137.62/638,103.42
  6. Step 6: Final answer
    x = 530,378.28

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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.