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Finding the Fourth Proportional to 694,719.92, 958,893.72 and 393,088.88

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Solution

The fourth proportional to 694,719.92, 958,893.72 and 393,088.88 is: 542,564.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,719.92 : 958,893.72 = 393,088.88 : x
  2. Step 2: Convert to fraction form
    694,719.92/958,893.72 = 393,088.88/x
  3. Step 3: Cross multiply
    694,719.92x = 958,893.72 × 393,088.88
  4. Step 4: Simplify right side
    694,719.92x = 376,930,458,433.83
  5. Step 5: Solve for x
    x = 376,930,458,433.83/694,719.92
  6. Step 6: Final answer
    x = 542,564.63

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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.