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Finding the Fourth Proportional to 519,726.38, 778,961.73 and 253,087.34

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Solution

The fourth proportional to 519,726.38, 778,961.73 and 253,087.34 is: 379,325.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,726.38 : 778,961.73 = 253,087.34 : x
  2. Step 2: Convert to fraction form
    519,726.38/778,961.73 = 253,087.34/x
  3. Step 3: Cross multiply
    519,726.38x = 778,961.73 × 253,087.34
  4. Step 4: Simplify right side
    519,726.38x = 197,145,352,207.50
  5. Step 5: Solve for x
    x = 197,145,352,207.50/519,726.38
  6. Step 6: Final answer
    x = 379,325.28

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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.