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Finding the Fourth Proportional to 25,689.74, 38,534.42 and 13,213.23

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Solution

The fourth proportional to 25,689.74, 38,534.42 and 13,213.23 is: 19,819.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,689.74 : 38,534.42 = 13,213.23 : x
  2. Step 2: Convert to fraction form
    25,689.74/38,534.42 = 13,213.23/x
  3. Step 3: Cross multiply
    25,689.74x = 38,534.42 × 13,213.23
  4. Step 4: Simplify right side
    25,689.74x = 509,164,088.31
  5. Step 5: Solve for x
    x = 509,164,088.31/25,689.74
  6. Step 6: Final answer
    x = 19,819.75

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