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Finding the Fourth Proportional to 512,318.25, 706,999.59 and 285,963.75

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Solution

The fourth proportional to 512,318.25, 706,999.59 and 285,963.75 is: 394,630.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,318.25 : 706,999.59 = 285,963.75 : x
  2. Step 2: Convert to fraction form
    512,318.25/706,999.59 = 285,963.75/x
  3. Step 3: Cross multiply
    512,318.25x = 706,999.59 × 285,963.75
  4. Step 4: Simplify right side
    512,318.25x = 202,176,254,004.86
  5. Step 5: Solve for x
    x = 202,176,254,004.86/512,318.25
  6. Step 6: Final answer
    x = 394,630.20

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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.