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Finding the Fourth Proportional to 18,447.54, 25,457.68 and 10,064.22

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Solution

The fourth proportional to 18,447.54, 25,457.68 and 10,064.22 is: 13,888.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,447.54 : 25,457.68 = 10,064.22 : x
  2. Step 2: Convert to fraction form
    18,447.54/25,457.68 = 10,064.22/x
  3. Step 3: Cross multiply
    18,447.54x = 25,457.68 × 10,064.22
  4. Step 4: Simplify right side
    18,447.54x = 256,211,692.21
  5. Step 5: Solve for x
    x = 256,211,692.21/18,447.54
  6. Step 6: Final answer
    x = 13,888.66

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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.