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Finding the Fourth Proportional to 553,906.70, 831,188.10 and 403,769.15

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Solution

The fourth proportional to 553,906.70, 831,188.10 and 403,769.15 is: 605,892.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,906.70 : 831,188.10 = 403,769.15 : x
  2. Step 2: Convert to fraction form
    553,906.70/831,188.10 = 403,769.15/x
  3. Step 3: Cross multiply
    553,906.70x = 831,188.10 × 403,769.15
  4. Step 4: Simplify right side
    553,906.70x = 335,608,112,627.12
  5. Step 5: Solve for x
    x = 335,608,112,627.12/553,906.70
  6. Step 6: Final answer
    x = 605,892.86

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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.