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Finding the Fourth Proportional to 400,081.17, 600,590.60 and 315,898.08

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Solution

The fourth proportional to 400,081.17, 600,590.60 and 315,898.08 is: 474,217.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,081.17 : 600,590.60 = 315,898.08 : x
  2. Step 2: Convert to fraction form
    400,081.17/600,590.60 = 315,898.08/x
  3. Step 3: Cross multiply
    400,081.17x = 600,590.60 × 315,898.08
  4. Step 4: Simplify right side
    400,081.17x = 189,725,414,758.96
  5. Step 5: Solve for x
    x = 189,725,414,758.96/400,081.17
  6. Step 6: Final answer
    x = 474,217.30

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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.