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Finding the Fourth Proportional to 233,144.80, 349,717.20 and 66,911.20

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Solution

The fourth proportional to 233,144.80, 349,717.20 and 66,911.20 is: 100,366.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    233,144.80 : 349,717.20 = 66,911.20 : x
  2. Step 2: Convert to fraction form
    233,144.80/349,717.20 = 66,911.20/x
  3. Step 3: Cross multiply
    233,144.80x = 349,717.20 × 66,911.20
  4. Step 4: Simplify right side
    233,144.80x = 23,399,997,512.64
  5. Step 5: Solve for x
    x = 23,399,997,512.64/233,144.80
  6. Step 6: Final answer
    x = 100,366.80

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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.