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Finding the Fourth Proportional to 19,361.70, 26,717.58 and 10,862.64

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Solution

The fourth proportional to 19,361.70, 26,717.58 and 10,862.64 is: 14,989.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,361.70 : 26,717.58 = 10,862.64 : x
  2. Step 2: Convert to fraction form
    19,361.70/26,717.58 = 10,862.64/x
  3. Step 3: Cross multiply
    19,361.70x = 26,717.58 × 10,862.64
  4. Step 4: Simplify right side
    19,361.70x = 290,223,453.21
  5. Step 5: Solve for x
    x = 290,223,453.21/19,361.70
  6. Step 6: Final answer
    x = 14,989.56

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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.