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Finding the Fourth Proportional to 605,204.70, 907,807.05 and 392,628.30

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Solution

The fourth proportional to 605,204.70, 907,807.05 and 392,628.30 is: 588,942.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,204.70 : 907,807.05 = 392,628.30 : x
  2. Step 2: Convert to fraction form
    605,204.70/907,807.05 = 392,628.30/x
  3. Step 3: Cross multiply
    605,204.70x = 907,807.05 × 392,628.30
  4. Step 4: Simplify right side
    605,204.70x = 356,430,738,769.52
  5. Step 5: Solve for x
    x = 356,430,738,769.52/605,204.70
  6. Step 6: Final answer
    x = 588,942.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.