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Finding the Fourth Proportional to 404,906.79, 558,434.48 and 303,172.41

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Solution

The fourth proportional to 404,906.79, 558,434.48 and 303,172.41 is: 418,125.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,906.79 : 558,434.48 = 303,172.41 : x
  2. Step 2: Convert to fraction form
    404,906.79/558,434.48 = 303,172.41/x
  3. Step 3: Cross multiply
    404,906.79x = 558,434.48 × 303,172.41
  4. Step 4: Simplify right side
    404,906.79x = 169,301,925,612.84
  5. Step 5: Solve for x
    x = 169,301,925,612.84/404,906.79
  6. Step 6: Final answer
    x = 418,125.68

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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.