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Finding the Fourth Proportional to 203,213.80, 304,820.70 and 62,986.60

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Solution

The fourth proportional to 203,213.80, 304,820.70 and 62,986.60 is: 94,479.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,213.80 : 304,820.70 = 62,986.60 : x
  2. Step 2: Convert to fraction form
    203,213.80/304,820.70 = 62,986.60/x
  3. Step 3: Cross multiply
    203,213.80x = 304,820.70 × 62,986.60
  4. Step 4: Simplify right side
    203,213.80x = 19,199,619,502.62
  5. Step 5: Solve for x
    x = 19,199,619,502.62/203,213.80
  6. Step 6: Final answer
    x = 94,479.90

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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.