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Finding the Fourth Proportional to 91,568.74, 137,107.03 and 58,107.64

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Solution

The fourth proportional to 91,568.74, 137,107.03 and 58,107.64 is: 87,005.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,568.74 : 137,107.03 = 58,107.64 : x
  2. Step 2: Convert to fraction form
    91,568.74/137,107.03 = 58,107.64/x
  3. Step 3: Cross multiply
    91,568.74x = 137,107.03 × 58,107.64
  4. Step 4: Simplify right side
    91,568.74x = 7,966,965,940.71
  5. Step 5: Solve for x
    x = 7,966,965,940.71/91,568.74
  6. Step 6: Final answer
    x = 87,005.30

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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.