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Finding the Fourth Proportional to 167,813.40, 251,720.10 and 153,816.60

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Solution

The fourth proportional to 167,813.40, 251,720.10 and 153,816.60 is: 230,724.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,813.40 : 251,720.10 = 153,816.60 : x
  2. Step 2: Convert to fraction form
    167,813.40/251,720.10 = 153,816.60/x
  3. Step 3: Cross multiply
    167,813.40x = 251,720.10 × 153,816.60
  4. Step 4: Simplify right side
    167,813.40x = 38,718,729,933.66
  5. Step 5: Solve for x
    x = 38,718,729,933.66/167,813.40
  6. Step 6: Final answer
    x = 230,724.90

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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.