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Finding the Fourth Proportional to 693,491.56, 955,553.70 and 617,217.64

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Solution

The fourth proportional to 693,491.56, 955,553.70 and 617,217.64 is: 850,456.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,491.56 : 955,553.70 = 617,217.64 : x
  2. Step 2: Convert to fraction form
    693,491.56/955,553.70 = 617,217.64/x
  3. Step 3: Cross multiply
    693,491.56x = 955,553.70 × 617,217.64
  4. Step 4: Simplify right side
    693,491.56x = 589,784,599,607.27
  5. Step 5: Solve for x
    x = 589,784,599,607.27/693,491.56
  6. Step 6: Final answer
    x = 850,456.78

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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.