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Finding the Fourth Proportional to 519,030.70, 778,571.65 and 270,198.70

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Solution

The fourth proportional to 519,030.70, 778,571.65 and 270,198.70 is: 405,311.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,030.70 : 778,571.65 = 270,198.70 : x
  2. Step 2: Convert to fraction form
    519,030.70/778,571.65 = 270,198.70/x
  3. Step 3: Cross multiply
    519,030.70x = 778,571.65 × 270,198.70
  4. Step 4: Simplify right side
    519,030.70x = 210,369,047,686.86
  5. Step 5: Solve for x
    x = 210,369,047,686.86/519,030.70
  6. Step 6: Final answer
    x = 405,311.38

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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.