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Finding the Fourth Proportional to 141,168.56, 194,811.80 and 76,639.10

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Solution

The fourth proportional to 141,168.56, 194,811.80 and 76,639.10 is: 105,761.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,168.56 : 194,811.80 = 76,639.10 : x
  2. Step 2: Convert to fraction form
    141,168.56/194,811.80 = 76,639.10/x
  3. Step 3: Cross multiply
    141,168.56x = 194,811.80 × 76,639.10
  4. Step 4: Simplify right side
    141,168.56x = 14,930,199,664.13
  5. Step 5: Solve for x
    x = 14,930,199,664.13/141,168.56
  6. Step 6: Final answer
    x = 105,761.51

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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.