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Finding the Fourth Proportional to 14,858.64, 20,502.96 and 8,889.12

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Solution

The fourth proportional to 14,858.64, 20,502.96 and 8,889.12 is: 12,265.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,858.64 : 20,502.96 = 8,889.12 : x
  2. Step 2: Convert to fraction form
    14,858.64/20,502.96 = 8,889.12/x
  3. Step 3: Cross multiply
    14,858.64x = 20,502.96 × 8,889.12
  4. Step 4: Simplify right side
    14,858.64x = 182,253,271.80
  5. Step 5: Solve for x
    x = 182,253,271.80/14,858.64
  6. Step 6: Final answer
    x = 12,265.81

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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.