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Finding the Fourth Proportional to 553,903.70, 831,183.60 and 403,766.15

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Solution

The fourth proportional to 553,903.70, 831,183.60 and 403,766.15 is: 605,888.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,903.70 : 831,183.60 = 403,766.15 : x
  2. Step 2: Convert to fraction form
    553,903.70/831,183.60 = 403,766.15/x
  3. Step 3: Cross multiply
    553,903.70x = 831,183.60 × 403,766.15
  4. Step 4: Simplify right side
    553,903.70x = 335,603,802,115.14
  5. Step 5: Solve for x
    x = 335,603,802,115.14/553,903.70
  6. Step 6: Final answer
    x = 605,888.36

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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.