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Finding the Fourth Proportional to 14,661.84, 20,236.86 and 8,377.86

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Solution

The fourth proportional to 14,661.84, 20,236.86 and 8,377.86 is: 11,563.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,661.84 : 20,236.86 = 8,377.86 : x
  2. Step 2: Convert to fraction form
    14,661.84/20,236.86 = 8,377.86/x
  3. Step 3: Cross multiply
    14,661.84x = 20,236.86 × 8,377.86
  4. Step 4: Simplify right side
    14,661.84x = 169,541,579.92
  5. Step 5: Solve for x
    x = 169,541,579.92/14,661.84
  6. Step 6: Final answer
    x = 11,563.46

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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.