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Finding the Fourth Proportional to 125,640.86, 188,461.28 and 42,528.38

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Solution

The fourth proportional to 125,640.86, 188,461.28 and 42,528.38 is: 63,792.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,640.86 : 188,461.28 = 42,528.38 : x
  2. Step 2: Convert to fraction form
    125,640.86/188,461.28 = 42,528.38/x
  3. Step 3: Cross multiply
    125,640.86x = 188,461.28 × 42,528.38
  4. Step 4: Simplify right side
    125,640.86x = 8,014,952,095.14
  5. Step 5: Solve for x
    x = 8,014,952,095.14/125,640.86
  6. Step 6: Final answer
    x = 63,792.56

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