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Finding the Fourth Proportional to 20,656.22, 30,967.92 and 7,506.88

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Solution

The fourth proportional to 20,656.22, 30,967.92 and 7,506.88 is: 11,254.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,656.22 : 30,967.92 = 7,506.88 : x
  2. Step 2: Convert to fraction form
    20,656.22/30,967.92 = 7,506.88/x
  3. Step 3: Cross multiply
    20,656.22x = 30,967.92 × 7,506.88
  4. Step 4: Simplify right side
    20,656.22x = 232,472,381.87
  5. Step 5: Solve for x
    x = 232,472,381.87/20,656.22
  6. Step 6: Final answer
    x = 11,254.36

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.