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Finding the Fourth Proportional to 624,892.01, 862,346.68 and 338,405.54

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Solution

The fourth proportional to 624,892.01, 862,346.68 and 338,405.54 is: 466,997.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,892.01 : 862,346.68 = 338,405.54 : x
  2. Step 2: Convert to fraction form
    624,892.01/862,346.68 = 338,405.54/x
  3. Step 3: Cross multiply
    624,892.01x = 862,346.68 × 338,405.54
  4. Step 4: Simplify right side
    624,892.01x = 291,822,887,908.85
  5. Step 5: Solve for x
    x = 291,822,887,908.85/624,892.01
  6. Step 6: Final answer
    x = 466,997.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.