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Finding the Fourth Proportional to 25,893.37, 35,731.82 and 15,286.42

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Solution

The fourth proportional to 25,893.37, 35,731.82 and 15,286.42 is: 21,094.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,893.37 : 35,731.82 = 15,286.42 : x
  2. Step 2: Convert to fraction form
    25,893.37/35,731.82 = 15,286.42/x
  3. Step 3: Cross multiply
    25,893.37x = 35,731.82 × 15,286.42
  4. Step 4: Simplify right side
    25,893.37x = 546,211,352.79
  5. Step 5: Solve for x
    x = 546,211,352.79/25,893.37
  6. Step 6: Final answer
    x = 21,094.65

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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.