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Finding the Fourth Proportional to 91,911.92, 137,846.28 and 58,583.12

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Solution

The fourth proportional to 91,911.92, 137,846.28 and 58,583.12 is: 87,860.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,911.92 : 137,846.28 = 58,583.12 : x
  2. Step 2: Convert to fraction form
    91,911.92/137,846.28 = 58,583.12/x
  3. Step 3: Cross multiply
    91,911.92x = 137,846.28 × 58,583.12
  4. Step 4: Simplify right side
    91,911.92x = 8,075,465,162.79
  5. Step 5: Solve for x
    x = 8,075,465,162.79/91,911.92
  6. Step 6: Final answer
    x = 87,860.91

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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.