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Finding the Fourth Proportional to 656,040.38, 905,344.83 and 365,643.91

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Solution

The fourth proportional to 656,040.38, 905,344.83 and 365,643.91 is: 504,593.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,040.38 : 905,344.83 = 365,643.91 : x
  2. Step 2: Convert to fraction form
    656,040.38/905,344.83 = 365,643.91/x
  3. Step 3: Cross multiply
    656,040.38x = 905,344.83 × 365,643.91
  4. Step 4: Simplify right side
    656,040.38x = 331,033,824,671.17
  5. Step 5: Solve for x
    x = 331,033,824,671.17/656,040.38
  6. Step 6: Final answer
    x = 504,593.68

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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.