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Finding the Fourth Proportional to 12,192.90, 16,826.28 and 7,476.28

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Solution

The fourth proportional to 12,192.90, 16,826.28 and 7,476.28 is: 10,317.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,192.90 : 16,826.28 = 7,476.28 : x
  2. Step 2: Convert to fraction form
    12,192.90/16,826.28 = 7,476.28/x
  3. Step 3: Cross multiply
    12,192.90x = 16,826.28 × 7,476.28
  4. Step 4: Simplify right side
    12,192.90x = 125,797,980.64
  5. Step 5: Solve for x
    x = 125,797,980.64/12,192.90
  6. Step 6: Final answer
    x = 10,317.31

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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.