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Finding the Fourth Proportional to 103,603.74, 142,972.96 and 58,281.76

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Solution

The fourth proportional to 103,603.74, 142,972.96 and 58,281.76 is: 80,428.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,603.74 : 142,972.96 = 58,281.76 : x
  2. Step 2: Convert to fraction form
    103,603.74/142,972.96 = 58,281.76/x
  3. Step 3: Cross multiply
    103,603.74x = 142,972.96 × 58,281.76
  4. Step 4: Simplify right side
    103,603.74x = 8,332,715,116.42
  5. Step 5: Solve for x
    x = 8,332,715,116.42/103,603.74
  6. Step 6: Final answer
    x = 80,428.71

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