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Finding the Fourth Proportional to 519,713.88, 778,942.98 and 253,074.84

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Solution

The fourth proportional to 519,713.88, 778,942.98 and 253,074.84 is: 379,306.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,713.88 : 778,942.98 = 253,074.84 : x
  2. Step 2: Convert to fraction form
    519,713.88/778,942.98 = 253,074.84/x
  3. Step 3: Cross multiply
    519,713.88x = 778,942.98 × 253,074.84
  4. Step 4: Simplify right side
    519,713.88x = 197,130,870,032.62
  5. Step 5: Solve for x
    x = 197,130,870,032.62/519,713.88
  6. Step 6: Final answer
    x = 379,306.53

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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.