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Finding the Fourth Proportional to 12,195.16, 16,829.82 and 7,418.32

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Solution

The fourth proportional to 12,195.16, 16,829.82 and 7,418.32 is: 10,237.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,195.16 : 16,829.82 = 7,418.32 : x
  2. Step 2: Convert to fraction form
    12,195.16/16,829.82 = 7,418.32/x
  3. Step 3: Cross multiply
    12,195.16x = 16,829.82 × 7,418.32
  4. Step 4: Simplify right side
    12,195.16x = 124,848,990.30
  5. Step 5: Solve for x
    x = 124,848,990.30/12,195.16
  6. Step 6: Final answer
    x = 10,237.59

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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.