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Finding the Fourth Proportional to 60,558.12, 90,914.94 and 51,382.44

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Solution

The fourth proportional to 60,558.12, 90,914.94 and 51,382.44 is: 77,139.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,558.12 : 90,914.94 = 51,382.44 : x
  2. Step 2: Convert to fraction form
    60,558.12/90,914.94 = 51,382.44/x
  3. Step 3: Cross multiply
    60,558.12x = 90,914.94 × 51,382.44
  4. Step 4: Simplify right side
    60,558.12x = 4,671,431,449.65
  5. Step 5: Solve for x
    x = 4,671,431,449.65/60,558.12
  6. Step 6: Final answer
    x = 77,139.64

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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.