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Finding the Fourth Proportional to 317,243.98, 476,033.10 and 139,873.42

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Solution

The fourth proportional to 317,243.98, 476,033.10 and 139,873.42 is: 209,883.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,243.98 : 476,033.10 = 139,873.42 : x
  2. Step 2: Convert to fraction form
    317,243.98/476,033.10 = 139,873.42/x
  3. Step 3: Cross multiply
    317,243.98x = 476,033.10 × 139,873.42
  4. Step 4: Simplify right side
    317,243.98x = 66,584,377,730.20
  5. Step 5: Solve for x
    x = 66,584,377,730.20/317,243.98
  6. Step 6: Final answer
    x = 209,883.82

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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.