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Finding the Fourth Proportional to 26,758.49, 36,929.45 and 15,428.39

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Solution

The fourth proportional to 26,758.49, 36,929.45 and 15,428.39 is: 21,292.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,758.49 : 36,929.45 = 15,428.39 : x
  2. Step 2: Convert to fraction form
    26,758.49/36,929.45 = 15,428.39/x
  3. Step 3: Cross multiply
    26,758.49x = 36,929.45 × 15,428.39
  4. Step 4: Simplify right side
    26,758.49x = 569,761,879.94
  5. Step 5: Solve for x
    x = 569,761,879.94/26,758.49
  6. Step 6: Final answer
    x = 21,292.75

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