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Finding the Fourth Proportional to 26,791.99, 36,978.06 and 15,468.82

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Solution

The fourth proportional to 26,791.99, 36,978.06 and 15,468.82 is: 21,349.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,791.99 : 36,978.06 = 15,468.82 : x
  2. Step 2: Convert to fraction form
    26,791.99/36,978.06 = 15,468.82/x
  3. Step 3: Cross multiply
    26,791.99x = 36,978.06 × 15,468.82
  4. Step 4: Simplify right side
    26,791.99x = 572,006,954.09
  5. Step 5: Solve for x
    x = 572,006,954.09/26,791.99
  6. Step 6: Final answer
    x = 21,349.92

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1.5x scale

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.