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Finding the Fourth Proportional to 18,953.53, 26,147.54 and 11,395.49

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Solution

The fourth proportional to 18,953.53, 26,147.54 and 11,395.49 is: 15,720.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,953.53 : 26,147.54 = 11,395.49 : x
  2. Step 2: Convert to fraction form
    18,953.53/26,147.54 = 11,395.49/x
  3. Step 3: Cross multiply
    18,953.53x = 26,147.54 × 11,395.49
  4. Step 4: Simplify right side
    18,953.53x = 297,963,928.35
  5. Step 5: Solve for x
    x = 297,963,928.35/18,953.53
  6. Step 6: Final answer
    x = 15,720.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.