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Finding the Fourth Proportional to 14,927.64, 20,600.74 and 8,213.82

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Solution

The fourth proportional to 14,927.64, 20,600.74 and 8,213.82 is: 11,335.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,927.64 : 20,600.74 = 8,213.82 : x
  2. Step 2: Convert to fraction form
    14,927.64/20,600.74 = 8,213.82/x
  3. Step 3: Cross multiply
    14,927.64x = 20,600.74 × 8,213.82
  4. Step 4: Simplify right side
    14,927.64x = 169,210,770.23
  5. Step 5: Solve for x
    x = 169,210,770.23/14,927.64
  6. Step 6: Final answer
    x = 11,335.40

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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.