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Finding the Fourth Proportional to 624,883.91, 862,338.48 and 338,403.11

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Solution

The fourth proportional to 624,883.91, 862,338.48 and 338,403.11 is: 466,995.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,883.91 : 862,338.48 = 338,403.11 : x
  2. Step 2: Convert to fraction form
    624,883.91/862,338.48 = 338,403.11/x
  3. Step 3: Cross multiply
    624,883.91x = 862,338.48 × 338,403.11
  4. Step 4: Simplify right side
    624,883.91x = 291,818,023,504.67
  5. Step 5: Solve for x
    x = 291,818,023,504.67/624,883.91
  6. Step 6: Final answer
    x = 466,995.58

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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.