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Finding the Fourth Proportional to 91,260.87, 136,700.36 and 73,394.96

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Solution

The fourth proportional to 91,260.87, 136,700.36 and 73,394.96 is: 109,938.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,260.87 : 136,700.36 = 73,394.96 : x
  2. Step 2: Convert to fraction form
    91,260.87/136,700.36 = 73,394.96/x
  3. Step 3: Cross multiply
    91,260.87x = 136,700.36 × 73,394.96
  4. Step 4: Simplify right side
    91,260.87x = 10,033,116,403.71
  5. Step 5: Solve for x
    x = 10,033,116,403.71/91,260.87
  6. Step 6: Final answer
    x = 109,938.86

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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.