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Finding the Fourth Proportional to 109,926.40, 164,889.60 and 26,820.40

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Solution

The fourth proportional to 109,926.40, 164,889.60 and 26,820.40 is: 40,230.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,926.40 : 164,889.60 = 26,820.40 : x
  2. Step 2: Convert to fraction form
    109,926.40/164,889.60 = 26,820.40/x
  3. Step 3: Cross multiply
    109,926.40x = 164,889.60 × 26,820.40
  4. Step 4: Simplify right side
    109,926.40x = 4,422,405,027.84
  5. Step 5: Solve for x
    x = 4,422,405,027.84/109,926.40
  6. Step 6: Final answer
    x = 40,230.60

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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.