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Finding the Fourth Proportional to 680,092.89, 938,513.03 and 393,607.23

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Solution

The fourth proportional to 680,092.89, 938,513.03 and 393,607.23 is: 543,169.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,092.89 : 938,513.03 = 393,607.23 : x
  2. Step 2: Convert to fraction form
    680,092.89/938,513.03 = 393,607.23/x
  3. Step 3: Cross multiply
    680,092.89x = 938,513.03 × 393,607.23
  4. Step 4: Simplify right side
    680,092.89x = 369,405,512,089.17
  5. Step 5: Solve for x
    x = 369,405,512,089.17/680,092.89
  6. Step 6: Final answer
    x = 543,169.20

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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.