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Finding the Fourth Proportional to 16,601.54, 22,909.64 and 9,890.15

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Solution

The fourth proportional to 16,601.54, 22,909.64 and 9,890.15 is: 13,648.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,601.54 : 22,909.64 = 9,890.15 : x
  2. Step 2: Convert to fraction form
    16,601.54/22,909.64 = 9,890.15/x
  3. Step 3: Cross multiply
    16,601.54x = 22,909.64 × 9,890.15
  4. Step 4: Simplify right side
    16,601.54x = 226,579,612.05
  5. Step 5: Solve for x
    x = 226,579,612.05/16,601.54
  6. Step 6: Final answer
    x = 13,648.11

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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.