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Finding the Fourth Proportional to 10,926.62, 16,390.02 and 4,354.48

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Solution

The fourth proportional to 10,926.62, 16,390.02 and 4,354.48 is: 6,531.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,926.62 : 16,390.02 = 4,354.48 : x
  2. Step 2: Convert to fraction form
    10,926.62/16,390.02 = 4,354.48/x
  3. Step 3: Cross multiply
    10,926.62x = 16,390.02 × 4,354.48
  4. Step 4: Simplify right side
    10,926.62x = 71,370,014.29
  5. Step 5: Solve for x
    x = 71,370,014.29/10,926.62
  6. Step 6: Final answer
    x = 6,531.76

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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.