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Finding the Fourth Proportional to 10,505.92, 15,759.32 and 3,931.44

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Solution

The fourth proportional to 10,505.92, 15,759.32 and 3,931.44 is: 5,897.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,505.92 : 15,759.32 = 3,931.44 : x
  2. Step 2: Convert to fraction form
    10,505.92/15,759.32 = 3,931.44/x
  3. Step 3: Cross multiply
    10,505.92x = 15,759.32 × 3,931.44
  4. Step 4: Simplify right side
    10,505.92x = 61,956,821.02
  5. Step 5: Solve for x
    x = 61,956,821.02/10,505.92
  6. Step 6: Final answer
    x = 5,897.32

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