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Finding the Fourth Proportional to 208,045.72, 287,110.46 and 117,396.40

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Solution

The fourth proportional to 208,045.72, 287,110.46 and 117,396.40 is: 162,011.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,045.72 : 287,110.46 = 117,396.40 : x
  2. Step 2: Convert to fraction form
    208,045.72/287,110.46 = 117,396.40/x
  3. Step 3: Cross multiply
    208,045.72x = 287,110.46 × 117,396.40
  4. Step 4: Simplify right side
    208,045.72x = 33,705,734,406.34
  5. Step 5: Solve for x
    x = 33,705,734,406.34/208,045.72
  6. Step 6: Final answer
    x = 162,011.19

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