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Finding the Fourth Proportional to 132,928.40, 199,427.80 and 58,016.40

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Solution

The fourth proportional to 132,928.40, 199,427.80 and 58,016.40 is: 87,039.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,928.40 : 199,427.80 = 58,016.40 : x
  2. Step 2: Convert to fraction form
    132,928.40/199,427.80 = 58,016.40/x
  3. Step 3: Cross multiply
    132,928.40x = 199,427.80 × 58,016.40
  4. Step 4: Simplify right side
    132,928.40x = 11,570,083,015.92
  5. Step 5: Solve for x
    x = 11,570,083,015.92/132,928.40
  6. Step 6: Final answer
    x = 87,039.96

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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.