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Finding the Fourth Proportional to 11,167.12, 15,421 and 7,197.52

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Solution

The fourth proportional to 11,167.12, 15,421 and 7,197.52 is: 9,939.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,167.12 : 15,421 = 7,197.52 : x
  2. Step 2: Convert to fraction form
    11,167.12/15,421 = 7,197.52/x
  3. Step 3: Cross multiply
    11,167.12x = 15,421 × 7,197.52
  4. Step 4: Simplify right side
    11,167.12x = 110,992,955.92
  5. Step 5: Solve for x
    x = 110,992,955.92/11,167.12
  6. Step 6: Final answer
    x = 9,939.26

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.