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Finding the Fourth Proportional to 26,955.70, 40,419.15 and 11,355.70

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Solution

The fourth proportional to 26,955.70, 40,419.15 and 11,355.70 is: 17,027.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,955.70 : 40,419.15 = 11,355.70 : x
  2. Step 2: Convert to fraction form
    26,955.70/40,419.15 = 11,355.70/x
  3. Step 3: Cross multiply
    26,955.70x = 40,419.15 × 11,355.70
  4. Step 4: Simplify right side
    26,955.70x = 458,987,741.66
  5. Step 5: Solve for x
    x = 458,987,741.66/26,955.70
  6. Step 6: Final answer
    x = 17,027.48

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1.5x scale

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.