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Finding the Fourth Proportional to 126,436.32, 189,747.80 and 59,876.32

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Solution

The fourth proportional to 126,436.32, 189,747.80 and 59,876.32 is: 89,858.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,436.32 : 189,747.80 = 59,876.32 : x
  2. Step 2: Convert to fraction form
    126,436.32/189,747.80 = 59,876.32/x
  3. Step 3: Cross multiply
    126,436.32x = 189,747.80 × 59,876.32
  4. Step 4: Simplify right side
    126,436.32x = 11,361,399,992.10
  5. Step 5: Solve for x
    x = 11,361,399,992.10/126,436.32
  6. Step 6: Final answer
    x = 89,858.67

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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.