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Finding the Fourth Proportional to 404,770.69, 558,064.29 and 331,905.12

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Solution

The fourth proportional to 404,770.69, 558,064.29 and 331,905.12 is: 457,603.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,770.69 : 558,064.29 = 331,905.12 : x
  2. Step 2: Convert to fraction form
    404,770.69/558,064.29 = 331,905.12/x
  3. Step 3: Cross multiply
    404,770.69x = 558,064.29 × 331,905.12
  4. Step 4: Simplify right side
    404,770.69x = 185,224,395,140.17
  5. Step 5: Solve for x
    x = 185,224,395,140.17/404,770.69
  6. Step 6: Final answer
    x = 457,603.28

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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.