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Finding the Fourth Proportional to 708,939.99, 978,421.28 and 403,062.53

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Solution

The fourth proportional to 708,939.99, 978,421.28 and 403,062.53 is: 556,274.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,939.99 : 978,421.28 = 403,062.53 : x
  2. Step 2: Convert to fraction form
    708,939.99/978,421.28 = 403,062.53/x
  3. Step 3: Cross multiply
    708,939.99x = 978,421.28 × 403,062.53
  4. Step 4: Simplify right side
    708,939.99x = 394,364,949,615.22
  5. Step 5: Solve for x
    x = 394,364,949,615.22/708,939.99
  6. Step 6: Final answer
    x = 556,274.09

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