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Finding the Fourth Proportional to 358,538.80, 537,808.20 and 311,882.80

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Solution

The fourth proportional to 358,538.80, 537,808.20 and 311,882.80 is: 467,824.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,538.80 : 537,808.20 = 311,882.80 : x
  2. Step 2: Convert to fraction form
    358,538.80/537,808.20 = 311,882.80/x
  3. Step 3: Cross multiply
    358,538.80x = 537,808.20 × 311,882.80
  4. Step 4: Simplify right side
    358,538.80x = 167,733,127,278.96
  5. Step 5: Solve for x
    x = 167,733,127,278.96/358,538.80
  6. Step 6: Final answer
    x = 467,824.20

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