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Finding the Fourth Proportional to 14,846.86, 20,487.72 and 8,878.64

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Solution

The fourth proportional to 14,846.86, 20,487.72 and 8,878.64 is: 12,251.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,846.86 : 20,487.72 = 8,878.64 : x
  2. Step 2: Convert to fraction form
    14,846.86/20,487.72 = 8,878.64/x
  3. Step 3: Cross multiply
    14,846.86x = 20,487.72 × 8,878.64
  4. Step 4: Simplify right side
    14,846.86x = 181,903,090.30
  5. Step 5: Solve for x
    x = 181,903,090.30/14,846.86
  6. Step 6: Final answer
    x = 12,251.96

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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.