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Finding the Fourth Proportional to 12,443.68, 17,172.48 and 6,854.68

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Solution

The fourth proportional to 12,443.68, 17,172.48 and 6,854.68 is: 9,459.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,443.68 : 17,172.48 = 6,854.68 : x
  2. Step 2: Convert to fraction form
    12,443.68/17,172.48 = 6,854.68/x
  3. Step 3: Cross multiply
    12,443.68x = 17,172.48 × 6,854.68
  4. Step 4: Simplify right side
    12,443.68x = 117,711,855.21
  5. Step 5: Solve for x
    x = 117,711,855.21/12,443.68
  6. Step 6: Final answer
    x = 9,459.57

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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.