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Finding the Fourth Proportional to 14,672.12, 20,243.84 and 8,703.50

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Solution

The fourth proportional to 14,672.12, 20,243.84 and 8,703.50 is: 12,008.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,672.12 : 20,243.84 = 8,703.50 : x
  2. Step 2: Convert to fraction form
    14,672.12/20,243.84 = 8,703.50/x
  3. Step 3: Cross multiply
    14,672.12x = 20,243.84 × 8,703.50
  4. Step 4: Simplify right side
    14,672.12x = 176,192,261.44
  5. Step 5: Solve for x
    x = 176,192,261.44/14,672.12
  6. Step 6: Final answer
    x = 12,008.64

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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.