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Finding the Fourth Proportional to 45,503.88, 68,286.54 and 15,921.97

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Solution

The fourth proportional to 45,503.88, 68,286.54 and 15,921.97 is: 23,893.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,503.88 : 68,286.54 = 15,921.97 : x
  2. Step 2: Convert to fraction form
    45,503.88/68,286.54 = 15,921.97/x
  3. Step 3: Cross multiply
    45,503.88x = 68,286.54 × 15,921.97
  4. Step 4: Simplify right side
    45,503.88x = 1,087,256,130.27
  5. Step 5: Solve for x
    x = 1,087,256,130.27/45,503.88
  6. Step 6: Final answer
    x = 23,893.70

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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.