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Finding the Fourth Proportional to 72,454.80, 108,682.20 and 48,835.20

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Solution

The fourth proportional to 72,454.80, 108,682.20 and 48,835.20 is: 73,252.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,454.80 : 108,682.20 = 48,835.20 : x
  2. Step 2: Convert to fraction form
    72,454.80/108,682.20 = 48,835.20/x
  3. Step 3: Cross multiply
    72,454.80x = 108,682.20 × 48,835.20
  4. Step 4: Simplify right side
    72,454.80x = 5,307,516,973.44
  5. Step 5: Solve for x
    x = 5,307,516,973.44/72,454.80
  6. Step 6: Final answer
    x = 73,252.80

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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.