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Finding the Fourth Proportional to 72,464.80, 108,551.40 and 48,845.20

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Solution

The fourth proportional to 72,464.80, 108,551.40 and 48,845.20 is: 73,169.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,464.80 : 108,551.40 = 48,845.20 : x
  2. Step 2: Convert to fraction form
    72,464.80/108,551.40 = 48,845.20/x
  3. Step 3: Cross multiply
    72,464.80x = 108,551.40 × 48,845.20
  4. Step 4: Simplify right side
    72,464.80x = 5,302,214,843.28
  5. Step 5: Solve for x
    x = 5,302,214,843.28/72,464.80
  6. Step 6: Final answer
    x = 73,169.52

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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.