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Finding the Fourth Proportional to 710,519.20, 1,065,778.80 and 512,231.20

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Solution

The fourth proportional to 710,519.20, 1,065,778.80 and 512,231.20 is: 768,346.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,519.20 : 1,065,778.80 = 512,231.20 : x
  2. Step 2: Convert to fraction form
    710,519.20/1,065,778.80 = 512,231.20/x
  3. Step 3: Cross multiply
    710,519.20x = 1,065,778.80 × 512,231.20
  4. Step 4: Simplify right side
    710,519.20x = 545,925,153,658.56
  5. Step 5: Solve for x
    x = 545,925,153,658.56/710,519.20
  6. Step 6: Final answer
    x = 768,346.80

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