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Finding the Fourth Proportional to 19,176.60, 28,764.90 and 17,135.40

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Solution

The fourth proportional to 19,176.60, 28,764.90 and 17,135.40 is: 25,703.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,176.60 : 28,764.90 = 17,135.40 : x
  2. Step 2: Convert to fraction form
    19,176.60/28,764.90 = 17,135.40/x
  3. Step 3: Cross multiply
    19,176.60x = 28,764.90 × 17,135.40
  4. Step 4: Simplify right side
    19,176.60x = 492,898,067.46
  5. Step 5: Solve for x
    x = 492,898,067.46/19,176.60
  6. Step 6: Final answer
    x = 25,703.10

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