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Finding the Fourth Proportional to 399,114.30, 598,671.45 and 347,792.70

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Solution

The fourth proportional to 399,114.30, 598,671.45 and 347,792.70 is: 521,689.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,114.30 : 598,671.45 = 347,792.70 : x
  2. Step 2: Convert to fraction form
    399,114.30/598,671.45 = 347,792.70/x
  3. Step 3: Cross multiply
    399,114.30x = 598,671.45 × 347,792.70
  4. Step 4: Simplify right side
    399,114.30x = 208,213,560,008.42
  5. Step 5: Solve for x
    x = 208,213,560,008.42/399,114.30
  6. Step 6: Final answer
    x = 521,689.05

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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.