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Finding the Fourth Proportional to 403,788.70, 605,683.05 and 401,023.90

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Solution

The fourth proportional to 403,788.70, 605,683.05 and 401,023.90 is: 601,535.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,788.70 : 605,683.05 = 401,023.90 : x
  2. Step 2: Convert to fraction form
    403,788.70/605,683.05 = 401,023.90/x
  3. Step 3: Cross multiply
    403,788.70x = 605,683.05 × 401,023.90
  4. Step 4: Simplify right side
    403,788.70x = 242,893,378,874.90
  5. Step 5: Solve for x
    x = 242,893,378,874.90/403,788.70
  6. Step 6: Final answer
    x = 601,535.85

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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.