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Finding the Fourth Proportional to 141,866.88, 212,172.88 and 126,181.96

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Solution

The fourth proportional to 141,866.88, 212,172.88 and 126,181.96 is: 188,714.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,866.88 : 212,172.88 = 126,181.96 : x
  2. Step 2: Convert to fraction form
    141,866.88/212,172.88 = 126,181.96/x
  3. Step 3: Cross multiply
    141,866.88x = 212,172.88 × 126,181.96
  4. Step 4: Simplify right side
    141,866.88x = 26,772,389,857.24
  5. Step 5: Solve for x
    x = 26,772,389,857.24/141,866.88
  6. Step 6: Final answer
    x = 188,714.87

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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.