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Finding the Fourth Proportional to 141,262.08, 194,978.66 and 87,516.56

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Solution

The fourth proportional to 141,262.08, 194,978.66 and 87,516.56 is: 120,795.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,262.08 : 194,978.66 = 87,516.56 : x
  2. Step 2: Convert to fraction form
    141,262.08/194,978.66 = 87,516.56/x
  3. Step 3: Cross multiply
    141,262.08x = 194,978.66 × 87,516.56
  4. Step 4: Simplify right side
    141,262.08x = 17,063,860,184.13
  5. Step 5: Solve for x
    x = 17,063,860,184.13/141,262.08
  6. Step 6: Final answer
    x = 120,795.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.