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Finding the Fourth Proportional to 61,169.76, 91,650.96 and 48,728.16

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Solution

The fourth proportional to 61,169.76, 91,650.96 and 48,728.16 is: 73,009.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,169.76 : 91,650.96 = 48,728.16 : x
  2. Step 2: Convert to fraction form
    61,169.76/91,650.96 = 48,728.16/x
  3. Step 3: Cross multiply
    61,169.76x = 91,650.96 × 48,728.16
  4. Step 4: Simplify right side
    61,169.76x = 4,465,982,643.03
  5. Step 5: Solve for x
    x = 4,465,982,643.03/61,169.76
  6. Step 6: Final answer
    x = 73,009.65

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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.