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Finding the Fourth Proportional to 683,753.82, 943,428.72 and 393,347.55

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Solution

The fourth proportional to 683,753.82, 943,428.72 and 393,347.55 is: 542,732.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,753.82 : 943,428.72 = 393,347.55 : x
  2. Step 2: Convert to fraction form
    683,753.82/943,428.72 = 393,347.55/x
  3. Step 3: Cross multiply
    683,753.82x = 943,428.72 × 393,347.55
  4. Step 4: Simplify right side
    683,753.82x = 371,095,375,611.64
  5. Step 5: Solve for x
    x = 371,095,375,611.64/683,753.82
  6. Step 6: Final answer
    x = 542,732.43

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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.