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Finding the Fourth Proportional to 15,893.63, 21,937.24 and 10,859.88

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Solution

The fourth proportional to 15,893.63, 21,937.24 and 10,859.88 is: 14,989.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,893.63 : 21,937.24 = 10,859.88 : x
  2. Step 2: Convert to fraction form
    15,893.63/21,937.24 = 10,859.88/x
  3. Step 3: Cross multiply
    15,893.63x = 21,937.24 × 10,859.88
  4. Step 4: Simplify right side
    15,893.63x = 238,235,793.93
  5. Step 5: Solve for x
    x = 238,235,793.93/15,893.63
  6. Step 6: Final answer
    x = 14,989.39

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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.