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Finding the Fourth Proportional to 91,568.99, 137,107.40 and 58,107.89

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Solution

The fourth proportional to 91,568.99, 137,107.40 and 58,107.89 is: 87,005.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,568.99 : 137,107.40 = 58,107.89 : x
  2. Step 2: Convert to fraction form
    91,568.99/137,107.40 = 58,107.89/x
  3. Step 3: Cross multiply
    91,568.99x = 137,107.40 × 58,107.89
  4. Step 4: Simplify right side
    91,568.99x = 7,967,022,205.42
  5. Step 5: Solve for x
    x = 7,967,022,205.42/91,568.99
  6. Step 6: Final answer
    x = 87,005.68

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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.