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Finding the Fourth Proportional to 403,856.70, 605,785.05 and 401,091.90

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Solution

The fourth proportional to 403,856.70, 605,785.05 and 401,091.90 is: 601,637.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,856.70 : 605,785.05 = 401,091.90 : x
  2. Step 2: Convert to fraction form
    403,856.70/605,785.05 = 401,091.90/x
  3. Step 3: Cross multiply
    403,856.70x = 605,785.05 × 401,091.90
  4. Step 4: Simplify right side
    403,856.70x = 242,975,476,696.10
  5. Step 5: Solve for x
    x = 242,975,476,696.10/403,856.70
  6. Step 6: Final answer
    x = 601,637.85

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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.