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Finding the Fourth Proportional to 91,635.91, 137,220.53 and 60,376.39

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Solution

The fourth proportional to 91,635.91, 137,220.53 and 60,376.39 is: 90,410.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,635.91 : 137,220.53 = 60,376.39 : x
  2. Step 2: Convert to fraction form
    91,635.91/137,220.53 = 60,376.39/x
  3. Step 3: Cross multiply
    91,635.91x = 137,220.53 × 60,376.39
  4. Step 4: Simplify right side
    91,635.91x = 8,284,879,933.40
  5. Step 5: Solve for x
    x = 8,284,879,933.40/91,635.91
  6. Step 6: Final answer
    x = 90,410.84

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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.