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Finding the Fourth Proportional to 579,421.40, 869,132.10 and 264,493.40

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Solution

The fourth proportional to 579,421.40, 869,132.10 and 264,493.40 is: 396,740.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,421.40 : 869,132.10 = 264,493.40 : x
  2. Step 2: Convert to fraction form
    579,421.40/869,132.10 = 264,493.40/x
  3. Step 3: Cross multiply
    579,421.40x = 869,132.10 × 264,493.40
  4. Step 4: Simplify right side
    579,421.40x = 229,879,704,178.14
  5. Step 5: Solve for x
    x = 229,879,704,178.14/579,421.40
  6. Step 6: Final answer
    x = 396,740.10

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