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Finding the Fourth Proportional to 18,682.65, 25,765.29 and 14,696.64

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Solution

The fourth proportional to 18,682.65, 25,765.29 and 14,696.64 is: 20,268.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,682.65 : 25,765.29 = 14,696.64 : x
  2. Step 2: Convert to fraction form
    18,682.65/25,765.29 = 14,696.64/x
  3. Step 3: Cross multiply
    18,682.65x = 25,765.29 × 14,696.64
  4. Step 4: Simplify right side
    18,682.65x = 378,663,191.63
  5. Step 5: Solve for x
    x = 378,663,191.63/18,682.65
  6. Step 6: Final answer
    x = 20,268.17

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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.