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Finding the Fourth Proportional to 17,978.68, 26,967.66 and 5,666.68

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Solution

The fourth proportional to 17,978.68, 26,967.66 and 5,666.68 is: 8,499.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,978.68 : 26,967.66 = 5,666.68 : x
  2. Step 2: Convert to fraction form
    17,978.68/26,967.66 = 5,666.68/x
  3. Step 3: Cross multiply
    17,978.68x = 26,967.66 × 5,666.68
  4. Step 4: Simplify right side
    17,978.68x = 152,817,099.57
  5. Step 5: Solve for x
    x = 152,817,099.57/17,978.68
  6. Step 6: Final answer
    x = 8,499.91

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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.