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Finding the Fourth Proportional to 30,731.78, 46,098.76 and 12,016.20

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Solution

The fourth proportional to 30,731.78, 46,098.76 and 12,016.20 is: 18,024.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,731.78 : 46,098.76 = 12,016.20 : x
  2. Step 2: Convert to fraction form
    30,731.78/46,098.76 = 12,016.20/x
  3. Step 3: Cross multiply
    30,731.78x = 46,098.76 × 12,016.20
  4. Step 4: Simplify right side
    30,731.78x = 553,931,919.91
  5. Step 5: Solve for x
    x = 553,931,919.91/30,731.78
  6. Step 6: Final answer
    x = 18,024.73

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