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Finding the Fourth Proportional to 519,777.88, 779,038.98 and 253,138.84

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Solution

The fourth proportional to 519,777.88, 779,038.98 and 253,138.84 is: 379,402.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,777.88 : 779,038.98 = 253,138.84 : x
  2. Step 2: Convert to fraction form
    519,777.88/779,038.98 = 253,138.84/x
  3. Step 3: Cross multiply
    519,777.88x = 779,038.98 × 253,138.84
  4. Step 4: Simplify right side
    519,777.88x = 197,205,023,711.98
  5. Step 5: Solve for x
    x = 197,205,023,711.98/519,777.88
  6. Step 6: Final answer
    x = 379,402.49

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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.