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Finding the Fourth Proportional to 10,681.79, 16,022.68 and 6,987.13

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Solution

The fourth proportional to 10,681.79, 16,022.68 and 6,987.13 is: 10,480.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,681.79 : 16,022.68 = 6,987.13 : x
  2. Step 2: Convert to fraction form
    10,681.79/16,022.68 = 6,987.13/x
  3. Step 3: Cross multiply
    10,681.79x = 16,022.68 × 6,987.13
  4. Step 4: Simplify right side
    10,681.79x = 111,952,548.11
  5. Step 5: Solve for x
    x = 111,952,548.11/10,681.79
  6. Step 6: Final answer
    x = 10,480.69

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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.