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Finding the Fourth Proportional to 16,385.81, 22,612.36 and 8,933.81

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Solution

The fourth proportional to 16,385.81, 22,612.36 and 8,933.81 is: 12,328.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,385.81 : 22,612.36 = 8,933.81 : x
  2. Step 2: Convert to fraction form
    16,385.81/22,612.36 = 8,933.81/x
  3. Step 3: Cross multiply
    16,385.81x = 22,612.36 × 8,933.81
  4. Step 4: Simplify right side
    16,385.81x = 202,014,527.89
  5. Step 5: Solve for x
    x = 202,014,527.89/16,385.81
  6. Step 6: Final answer
    x = 12,328.63

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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.