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Finding the Fourth Proportional to 519,523.80, 779,868.90 and 401,717.40

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Solution

The fourth proportional to 519,523.80, 779,868.90 and 401,717.40 is: 603,027.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,523.80 : 779,868.90 = 401,717.40 : x
  2. Step 2: Convert to fraction form
    519,523.80/779,868.90 = 401,717.40/x
  3. Step 3: Cross multiply
    519,523.80x = 779,868.90 × 401,717.40
  4. Step 4: Simplify right side
    519,523.80x = 313,286,906,848.86
  5. Step 5: Solve for x
    x = 313,286,906,848.86/519,523.80
  6. Step 6: Final answer
    x = 603,027.05

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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.