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Finding the Fourth Proportional to 52,303.32, 78,455.52 and 20,721.06

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Solution

The fourth proportional to 52,303.32, 78,455.52 and 20,721.06 is: 31,081.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,303.32 : 78,455.52 = 20,721.06 : x
  2. Step 2: Convert to fraction form
    52,303.32/78,455.52 = 20,721.06/x
  3. Step 3: Cross multiply
    52,303.32x = 78,455.52 × 20,721.06
  4. Step 4: Simplify right side
    52,303.32x = 1,625,681,733.39
  5. Step 5: Solve for x
    x = 1,625,681,733.39/52,303.32
  6. Step 6: Final answer
    x = 31,081.81

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