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Finding the Fourth Proportional to 26,370, 36,390.60 and 15,192

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Solution

The fourth proportional to 26,370, 36,390.60 and 15,192 is: 20,964.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,370 : 36,390.60 = 15,192 : x
  2. Step 2: Convert to fraction form
    26,370/36,390.60 = 15,192/x
  3. Step 3: Cross multiply
    26,370x = 36,390.60 × 15,192
  4. Step 4: Simplify right side
    26,370x = 552,845,995.20
  5. Step 5: Solve for x
    x = 552,845,995.20/26,370
  6. Step 6: Final answer
    x = 20,964.96

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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.