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Finding the Fourth Proportional to 13,385.92, 20,058.54 and 10,600.96

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Solution

The fourth proportional to 13,385.92, 20,058.54 and 10,600.96 is: 15,885.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.92 : 20,058.54 = 10,600.96 : x
  2. Step 2: Convert to fraction form
    13,385.92/20,058.54 = 10,600.96/x
  3. Step 3: Cross multiply
    13,385.92x = 20,058.54 × 10,600.96
  4. Step 4: Simplify right side
    13,385.92x = 212,639,780.20
  5. Step 5: Solve for x
    x = 212,639,780.20/13,385.92
  6. Step 6: Final answer
    x = 15,885.33

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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.