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Finding the Fourth Proportional to 266,530.20, 399,139.20 and 177,300.60

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Solution

The fourth proportional to 266,530.20, 399,139.20 and 177,300.60 is: 265,514.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,530.20 : 399,139.20 = 177,300.60 : x
  2. Step 2: Convert to fraction form
    266,530.20/399,139.20 = 177,300.60/x
  3. Step 3: Cross multiply
    266,530.20x = 399,139.20 × 177,300.60
  4. Step 4: Simplify right side
    266,530.20x = 70,767,619,643.52
  5. Step 5: Solve for x
    x = 70,767,619,643.52/266,530.20
  6. Step 6: Final answer
    x = 265,514.45

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