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Finding the Fourth Proportional to 18,317.70, 27,464.40 and 6,629.40

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Solution

The fourth proportional to 18,317.70, 27,464.40 and 6,629.40 is: 9,939.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,317.70 : 27,464.40 = 6,629.40 : x
  2. Step 2: Convert to fraction form
    18,317.70/27,464.40 = 6,629.40/x
  3. Step 3: Cross multiply
    18,317.70x = 27,464.40 × 6,629.40
  4. Step 4: Simplify right side
    18,317.70x = 182,072,493.36
  5. Step 5: Solve for x
    x = 182,072,493.36/18,317.70
  6. Step 6: Final answer
    x = 9,939.70

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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.