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Finding the Fourth Proportional to 61,890.06, 92,820.21 and 28,578.12

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Solution

The fourth proportional to 61,890.06, 92,820.21 and 28,578.12 is: 42,860.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,890.06 : 92,820.21 = 28,578.12 : x
  2. Step 2: Convert to fraction form
    61,890.06/92,820.21 = 28,578.12/x
  3. Step 3: Cross multiply
    61,890.06x = 92,820.21 × 28,578.12
  4. Step 4: Simplify right side
    61,890.06x = 2,652,627,099.81
  5. Step 5: Solve for x
    x = 2,652,627,099.81/61,890.06
  6. Step 6: Final answer
    x = 42,860.31

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