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Finding the Fourth Proportional to 156,662.88, 235,083.20 and 84,614.90

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Solution

The fourth proportional to 156,662.88, 235,083.20 and 84,614.90 is: 126,970.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,662.88 : 235,083.20 = 84,614.90 : x
  2. Step 2: Convert to fraction form
    156,662.88/235,083.20 = 84,614.90/x
  3. Step 3: Cross multiply
    156,662.88x = 235,083.20 × 84,614.90
  4. Step 4: Simplify right side
    156,662.88x = 19,891,541,459.68
  5. Step 5: Solve for x
    x = 19,891,541,459.68/156,662.88
  6. Step 6: Final answer
    x = 126,970.35

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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.