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Finding the Fourth Proportional to 72,451.40, 108,703.20 and 32,467.10

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Solution

The fourth proportional to 72,451.40, 108,703.20 and 32,467.10 is: 48,712.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,451.40 : 108,703.20 = 32,467.10 : x
  2. Step 2: Convert to fraction form
    72,451.40/108,703.20 = 32,467.10/x
  3. Step 3: Cross multiply
    72,451.40x = 108,703.20 × 32,467.10
  4. Step 4: Simplify right side
    72,451.40x = 3,529,277,664.72
  5. Step 5: Solve for x
    x = 3,529,277,664.72/72,451.40
  6. Step 6: Final answer
    x = 48,712.35

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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.