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Finding the Fourth Proportional to 17,896.57, 26,826.40 and 12,953.95

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Solution

The fourth proportional to 17,896.57, 26,826.40 and 12,953.95 is: 19,417.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,896.57 : 26,826.40 = 12,953.95 : x
  2. Step 2: Convert to fraction form
    17,896.57/26,826.40 = 12,953.95/x
  3. Step 3: Cross multiply
    17,896.57x = 26,826.40 × 12,953.95
  4. Step 4: Simplify right side
    17,896.57x = 347,507,844.28
  5. Step 5: Solve for x
    x = 347,507,844.28/17,896.57
  6. Step 6: Final answer
    x = 19,417.57

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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.