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Finding the Fourth Proportional to 188,718.48, 260,495.64 and 117,140.40

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Solution

The fourth proportional to 188,718.48, 260,495.64 and 117,140.40 is: 161,693.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,718.48 : 260,495.64 = 117,140.40 : x
  2. Step 2: Convert to fraction form
    188,718.48/260,495.64 = 117,140.40/x
  3. Step 3: Cross multiply
    188,718.48x = 260,495.64 × 117,140.40
  4. Step 4: Simplify right side
    188,718.48x = 30,514,563,467.86
  5. Step 5: Solve for x
    x = 30,514,563,467.86/188,718.48
  6. Step 6: Final answer
    x = 161,693.56

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