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Finding the Fourth Proportional to 4,707.82, 7,061.82 and 1,421.02

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Solution

The fourth proportional to 4,707.82, 7,061.82 and 1,421.02 is: 2,131.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,707.82 : 7,061.82 = 1,421.02 : x
  2. Step 2: Convert to fraction form
    4,707.82/7,061.82 = 1,421.02/x
  3. Step 3: Cross multiply
    4,707.82x = 7,061.82 × 1,421.02
  4. Step 4: Simplify right side
    4,707.82x = 10,034,987.46
  5. Step 5: Solve for x
    x = 10,034,987.46/4,707.82
  6. Step 6: Final answer
    x = 2,131.56

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