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Finding the Fourth Proportional to 10,429.76, 15,646.48 and 3,408.48

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Solution

The fourth proportional to 10,429.76, 15,646.48 and 3,408.48 is: 5,113.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,429.76 : 15,646.48 = 3,408.48 : x
  2. Step 2: Convert to fraction form
    10,429.76/15,646.48 = 3,408.48/x
  3. Step 3: Cross multiply
    10,429.76x = 15,646.48 × 3,408.48
  4. Step 4: Simplify right side
    10,429.76x = 53,330,714.15
  5. Step 5: Solve for x
    x = 53,330,714.15/10,429.76
  6. Step 6: Final answer
    x = 5,113.32

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