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Finding the Fourth Proportional to 61,268.52, 91,487.76 and 48,646.92

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Solution

The fourth proportional to 61,268.52, 91,487.76 and 48,646.92 is: 72,640.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,268.52 : 91,487.76 = 48,646.92 : x
  2. Step 2: Convert to fraction form
    61,268.52/91,487.76 = 48,646.92/x
  3. Step 3: Cross multiply
    61,268.52x = 91,487.76 × 48,646.92
  4. Step 4: Simplify right side
    61,268.52x = 4,450,597,741.70
  5. Step 5: Solve for x
    x = 4,450,597,741.70/61,268.52
  6. Step 6: Final answer
    x = 72,640.86

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.