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Finding the Fourth Proportional to 346,711.90, 520,067.85 and 325,716.70

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Solution

The fourth proportional to 346,711.90, 520,067.85 and 325,716.70 is: 488,575.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,711.90 : 520,067.85 = 325,716.70 : x
  2. Step 2: Convert to fraction form
    346,711.90/520,067.85 = 325,716.70/x
  3. Step 3: Cross multiply
    346,711.90x = 520,067.85 × 325,716.70
  4. Step 4: Simplify right side
    346,711.90x = 169,394,783,878.10
  5. Step 5: Solve for x
    x = 169,394,783,878.10/346,711.90
  6. Step 6: Final answer
    x = 488,575.05

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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.