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Finding the Fourth Proportional to 132,926.40, 199,696.80 and 91,454.40

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Solution

The fourth proportional to 132,926.40, 199,696.80 and 91,454.40 is: 137,392.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,926.40 : 199,696.80 = 91,454.40 : x
  2. Step 2: Convert to fraction form
    132,926.40/199,696.80 = 91,454.40/x
  3. Step 3: Cross multiply
    132,926.40x = 199,696.80 × 91,454.40
  4. Step 4: Simplify right side
    132,926.40x = 18,263,151,025.92
  5. Step 5: Solve for x
    x = 18,263,151,025.92/132,926.40
  6. Step 6: Final answer
    x = 137,392.96

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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.