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Finding the Fourth Proportional to 372,817.84, 514,555.34 and 219,846.76

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Solution

The fourth proportional to 372,817.84, 514,555.34 and 219,846.76 is: 303,427.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,817.84 : 514,555.34 = 219,846.76 : x
  2. Step 2: Convert to fraction form
    372,817.84/514,555.34 = 219,846.76/x
  3. Step 3: Cross multiply
    372,817.84x = 514,555.34 × 219,846.76
  4. Step 4: Simplify right side
    372,817.84x = 113,123,324,339.70
  5. Step 5: Solve for x
    x = 113,123,324,339.70/372,817.84
  6. Step 6: Final answer
    x = 303,427.87

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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.