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Finding the Fourth Proportional to 91,647.68, 137,385.32 and 49,464.54

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Solution

The fourth proportional to 91,647.68, 137,385.32 and 49,464.54 is: 74,150.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,647.68 : 137,385.32 = 49,464.54 : x
  2. Step 2: Convert to fraction form
    91,647.68/137,385.32 = 49,464.54/x
  3. Step 3: Cross multiply
    91,647.68x = 137,385.32 × 49,464.54
  4. Step 4: Simplify right side
    91,647.68x = 6,795,701,409.23
  5. Step 5: Solve for x
    x = 6,795,701,409.23/91,647.68
  6. Step 6: Final answer
    x = 74,150.29

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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.