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Finding the Fourth Proportional to 683,460.79, 943,204.52 and 393,072.55

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Solution

The fourth proportional to 683,460.79, 943,204.52 and 393,072.55 is: 542,456.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,460.79 : 943,204.52 = 393,072.55 : x
  2. Step 2: Convert to fraction form
    683,460.79/943,204.52 = 393,072.55/x
  3. Step 3: Cross multiply
    683,460.79x = 943,204.52 × 393,072.55
  4. Step 4: Simplify right side
    683,460.79x = 370,747,805,847.93
  5. Step 5: Solve for x
    x = 370,747,805,847.93/683,460.79
  6. Step 6: Final answer
    x = 542,456.58

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1.5x scale

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.