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Finding the Fourth Proportional to 719,872.84, 993,432.02 and 397,591.16

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Solution

The fourth proportional to 719,872.84, 993,432.02 and 397,591.16 is: 548,679.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,872.84 : 993,432.02 = 397,591.16 : x
  2. Step 2: Convert to fraction form
    719,872.84/993,432.02 = 397,591.16/x
  3. Step 3: Cross multiply
    719,872.84x = 993,432.02 × 397,591.16
  4. Step 4: Simplify right side
    719,872.84x = 394,979,789,212.94
  5. Step 5: Solve for x
    x = 394,979,789,212.94/719,872.84
  6. Step 6: Final answer
    x = 548,679.94

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Double scale
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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.