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Finding the Fourth Proportional to 519,767.55, 780,143.40 and 444,972.15

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Solution

The fourth proportional to 519,767.55, 780,143.40 and 444,972.15 is: 667,879.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,767.55 : 780,143.40 = 444,972.15 : x
  2. Step 2: Convert to fraction form
    519,767.55/780,143.40 = 444,972.15/x
  3. Step 3: Cross multiply
    519,767.55x = 780,143.40 × 444,972.15
  4. Step 4: Simplify right side
    519,767.55x = 347,142,086,006.31
  5. Step 5: Solve for x
    x = 347,142,086,006.31/519,767.55
  6. Step 6: Final answer
    x = 667,879.49

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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.