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Finding the Fourth Proportional to 508,936.50, 763,404.75 and 153,942.66

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Solution

The fourth proportional to 508,936.50, 763,404.75 and 153,942.66 is: 230,913.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,936.50 : 763,404.75 = 153,942.66 : x
  2. Step 2: Convert to fraction form
    508,936.50/763,404.75 = 153,942.66/x
  3. Step 3: Cross multiply
    508,936.50x = 763,404.75 × 153,942.66
  4. Step 4: Simplify right side
    508,936.50x = 117,520,557,871.64
  5. Step 5: Solve for x
    x = 117,520,557,871.64/508,936.50
  6. Step 6: Final answer
    x = 230,913.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.