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Finding the Fourth Proportional to 84,618.52, 126,938.58 and 28,434.52

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Solution

The fourth proportional to 84,618.52, 126,938.58 and 28,434.52 is: 42,655.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,618.52 : 126,938.58 = 28,434.52 : x
  2. Step 2: Convert to fraction form
    84,618.52/126,938.58 = 28,434.52/x
  3. Step 3: Cross multiply
    84,618.52x = 126,938.58 × 28,434.52
  4. Step 4: Simplify right side
    84,618.52x = 3,609,437,591.78
  5. Step 5: Solve for x
    x = 3,609,437,591.78/84,618.52
  6. Step 6: Final answer
    x = 42,655.41

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