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Finding the Fourth Proportional to 79,042.86, 109,068.39 and 47,205

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Solution

The fourth proportional to 79,042.86, 109,068.39 and 47,205 is: 65,136.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,042.86 : 109,068.39 = 47,205 : x
  2. Step 2: Convert to fraction form
    79,042.86/109,068.39 = 47,205/x
  3. Step 3: Cross multiply
    79,042.86x = 109,068.39 × 47,205
  4. Step 4: Simplify right side
    79,042.86x = 5,148,573,349.95
  5. Step 5: Solve for x
    x = 5,148,573,349.95/79,042.86
  6. Step 6: Final answer
    x = 65,136.48

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