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Finding the Fourth Proportional to 14,888.68, 20,555.99 and 9,229.44

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Solution

The fourth proportional to 14,888.68, 20,555.99 and 9,229.44 is: 12,742.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,888.68 : 20,555.99 = 9,229.44 : x
  2. Step 2: Convert to fraction form
    14,888.68/20,555.99 = 9,229.44/x
  3. Step 3: Cross multiply
    14,888.68x = 20,555.99 × 9,229.44
  4. Step 4: Simplify right side
    14,888.68x = 189,720,341.89
  5. Step 5: Solve for x
    x = 189,720,341.89/14,888.68
  6. Step 6: Final answer
    x = 12,742.59

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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.