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Finding the Fourth Proportional to 14,681.12, 21,984.06 and 8,099.96

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Solution

The fourth proportional to 14,681.12, 21,984.06 and 8,099.96 is: 12,129.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,681.12 : 21,984.06 = 8,099.96 : x
  2. Step 2: Convert to fraction form
    14,681.12/21,984.06 = 8,099.96/x
  3. Step 3: Cross multiply
    14,681.12x = 21,984.06 × 8,099.96
  4. Step 4: Simplify right side
    14,681.12x = 178,070,006.64
  5. Step 5: Solve for x
    x = 178,070,006.64/14,681.12
  6. Step 6: Final answer
    x = 12,129.18

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Why These Related Problems?

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