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Finding the Fourth Proportional to 496,937.61, 685,593.78 and 281,953.16

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Solution

The fourth proportional to 496,937.61, 685,593.78 and 281,953.16 is: 388,993.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,937.61 : 685,593.78 = 281,953.16 : x
  2. Step 2: Convert to fraction form
    496,937.61/685,593.78 = 281,953.16/x
  3. Step 3: Cross multiply
    496,937.61x = 685,593.78 × 281,953.16
  4. Step 4: Simplify right side
    496,937.61x = 193,305,329,319.38
  5. Step 5: Solve for x
    x = 193,305,329,319.38/496,937.61
  6. Step 6: Final answer
    x = 388,993.16

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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.