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Finding the Third Proportional to 18,931.22 and 29,395.41

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Solution

The third proportional to 18,931.22 and 29,395.41 is: 45,643.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,931.22 : 29,395.41 = 29,395.41 : x
  2. Step 2: Convert to fraction form
    18,931.22/29,395.41 = 29,395.41/x
  3. Step 3: Cross multiply
    18,931.22x = 29,395.41 × 29,395.41
  4. Step 4: Simplify right side
    18,931.22x = 864,089,908.60
  5. Step 5: Solve for x
    x = 864,089,908.60/18,931.22
  6. Step 6: Final answer
    x = 45,643.65

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.