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Finding the Fourth Proportional to 519,690.78, 717,173.28 and 293,350.86

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Solution

The fourth proportional to 519,690.78, 717,173.28 and 293,350.86 is: 404,824.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,690.78 : 717,173.28 = 293,350.86 : x
  2. Step 2: Convert to fraction form
    519,690.78/717,173.28 = 293,350.86/x
  3. Step 3: Cross multiply
    519,690.78x = 717,173.28 × 293,350.86
  4. Step 4: Simplify right side
    519,690.78x = 210,383,398,457.02
  5. Step 5: Solve for x
    x = 210,383,398,457.02/519,690.78
  6. Step 6: Final answer
    x = 404,824.19

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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.