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Finding the Fourth Proportional to 400,640.67, 600,992.12 and 116,335.91

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Solution

The fourth proportional to 400,640.67, 600,992.12 and 116,335.91 is: 174,512.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,640.67 : 600,992.12 = 116,335.91 : x
  2. Step 2: Convert to fraction form
    400,640.67/600,992.12 = 116,335.91/x
  3. Step 3: Cross multiply
    400,640.67x = 600,992.12 × 116,335.91
  4. Step 4: Simplify right side
    400,640.67x = 69,916,962,178.07
  5. Step 5: Solve for x
    x = 69,916,962,178.07/400,640.67
  6. Step 6: Final answer
    x = 174,512.89

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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.