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Finding the Fourth Proportional to 12,243.96, 16,896.24 and 6,938.64

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Solution

The fourth proportional to 12,243.96, 16,896.24 and 6,938.64 is: 9,575.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,243.96 : 16,896.24 = 6,938.64 : x
  2. Step 2: Convert to fraction form
    12,243.96/16,896.24 = 6,938.64/x
  3. Step 3: Cross multiply
    12,243.96x = 16,896.24 × 6,938.64
  4. Step 4: Simplify right side
    12,243.96x = 117,236,926.71
  5. Step 5: Solve for x
    x = 117,236,926.71/12,243.96
  6. Step 6: Final answer
    x = 9,575.08

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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.