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Finding the Fourth Proportional to 519,715.88, 778,945.98 and 253,076.84

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Solution

The fourth proportional to 519,715.88, 778,945.98 and 253,076.84 is: 379,309.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,715.88 : 778,945.98 = 253,076.84 : x
  2. Step 2: Convert to fraction form
    519,715.88/778,945.98 = 253,076.84/x
  3. Step 3: Cross multiply
    519,715.88x = 778,945.98 × 253,076.84
  4. Step 4: Simplify right side
    519,715.88x = 197,133,187,149.10
  5. Step 5: Solve for x
    x = 197,133,187,149.10/519,715.88
  6. Step 6: Final answer
    x = 379,309.53

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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.