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Finding the Fourth Proportional to 32,388.64, 44,696.64 and 18,238.72

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Solution

The fourth proportional to 32,388.64, 44,696.64 and 18,238.72 is: 25,169.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,388.64 : 44,696.64 = 18,238.72 : x
  2. Step 2: Convert to fraction form
    32,388.64/44,696.64 = 18,238.72/x
  3. Step 3: Cross multiply
    32,388.64x = 44,696.64 × 18,238.72
  4. Step 4: Simplify right side
    32,388.64x = 815,209,501.90
  5. Step 5: Solve for x
    x = 815,209,501.90/32,388.64
  6. Step 6: Final answer
    x = 25,169.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.