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Finding the Fourth Proportional to 409,687.60, 614,531.40 and 114,199.60

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Solution

The fourth proportional to 409,687.60, 614,531.40 and 114,199.60 is: 171,299.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,687.60 : 614,531.40 = 114,199.60 : x
  2. Step 2: Convert to fraction form
    409,687.60/614,531.40 = 114,199.60/x
  3. Step 3: Cross multiply
    409,687.60x = 614,531.40 × 114,199.60
  4. Step 4: Simplify right side
    409,687.60x = 70,179,240,067.44
  5. Step 5: Solve for x
    x = 70,179,240,067.44/409,687.60
  6. Step 6: Final answer
    x = 171,299.40

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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.