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Finding the Fourth Proportional to 70,617.98, 105,926.93 and 18,027.44

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Solution

The fourth proportional to 70,617.98, 105,926.93 and 18,027.44 is: 27,041.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,617.98 : 105,926.93 = 18,027.44 : x
  2. Step 2: Convert to fraction form
    70,617.98/105,926.93 = 18,027.44/x
  3. Step 3: Cross multiply
    70,617.98x = 105,926.93 × 18,027.44
  4. Step 4: Simplify right side
    70,617.98x = 1,909,591,284.82
  5. Step 5: Solve for x
    x = 1,909,591,284.82/70,617.98
  6. Step 6: Final answer
    x = 27,041.15

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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.