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Finding the Fourth Proportional to 126,612.66, 189,863.60 and 60,071.77

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Solution

The fourth proportional to 126,612.66, 189,863.60 and 60,071.77 is: 90,081.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,612.66 : 189,863.60 = 60,071.77 : x
  2. Step 2: Convert to fraction form
    126,612.66/189,863.60 = 60,071.77/x
  3. Step 3: Cross multiply
    126,612.66x = 189,863.60 × 60,071.77
  4. Step 4: Simplify right side
    126,612.66x = 11,405,441,885.73
  5. Step 5: Solve for x
    x = 11,405,441,885.73/126,612.66
  6. Step 6: Final answer
    x = 90,081.37

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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.