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Finding the Fourth Proportional to 72,392.43, 108,602.30 and 27,427.28

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Solution

The fourth proportional to 72,392.43, 108,602.30 and 27,427.28 is: 41,146.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,392.43 : 108,602.30 = 27,427.28 : x
  2. Step 2: Convert to fraction form
    72,392.43/108,602.30 = 27,427.28/x
  3. Step 3: Cross multiply
    72,392.43x = 108,602.30 × 27,427.28
  4. Step 4: Simplify right side
    72,392.43x = 2,978,665,216.30
  5. Step 5: Solve for x
    x = 2,978,665,216.30/72,392.43
  6. Step 6: Final answer
    x = 41,146.08

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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.