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Finding the Fourth Proportional to 98,678.64, 136,178.52 and 53,969.52

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Solution

The fourth proportional to 98,678.64, 136,178.52 and 53,969.52 is: 74,479.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,678.64 : 136,178.52 = 53,969.52 : x
  2. Step 2: Convert to fraction form
    98,678.64/136,178.52 = 53,969.52/x
  3. Step 3: Cross multiply
    98,678.64x = 136,178.52 × 53,969.52
  4. Step 4: Simplify right side
    98,678.64x = 7,349,489,358.71
  5. Step 5: Solve for x
    x = 7,349,489,358.71/98,678.64
  6. Step 6: Final answer
    x = 74,479.03

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