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Finding the Fourth Proportional to 35,896.90, 49,537.29 and 20,992.90

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Solution

The fourth proportional to 35,896.90, 49,537.29 and 20,992.90 is: 28,969.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,896.90 : 49,537.29 = 20,992.90 : x
  2. Step 2: Convert to fraction form
    35,896.90/49,537.29 = 20,992.90/x
  3. Step 3: Cross multiply
    35,896.90x = 49,537.29 × 20,992.90
  4. Step 4: Simplify right side
    35,896.90x = 1,039,931,375.24
  5. Step 5: Solve for x
    x = 1,039,931,375.24/35,896.90
  6. Step 6: Final answer
    x = 28,969.95

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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.