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Finding the Fourth Proportional to 719,694.36, 993,173.34 and 397,424.76

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Solution

The fourth proportional to 719,694.36, 993,173.34 and 397,424.76 is: 548,443.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,694.36 : 993,173.34 = 397,424.76 : x
  2. Step 2: Convert to fraction form
    719,694.36/993,173.34 = 397,424.76/x
  3. Step 3: Cross multiply
    719,694.36x = 993,173.34 × 397,424.76
  4. Step 4: Simplify right side
    719,694.36x = 394,711,676,287.90
  5. Step 5: Solve for x
    x = 394,711,676,287.90/719,694.36
  6. Step 6: Final answer
    x = 548,443.48

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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.