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Finding the Fourth Proportional to 654,421.80, 981,632.70 and 654,421.80

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Solution

The fourth proportional to 654,421.80, 981,632.70 and 654,421.80 is: 981,632.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,421.80 : 981,632.70 = 654,421.80 : x
  2. Step 2: Convert to fraction form
    654,421.80/981,632.70 = 654,421.80/x
  3. Step 3: Cross multiply
    654,421.80x = 981,632.70 × 654,421.80
  4. Step 4: Simplify right side
    654,421.80x = 642,401,838,472.86
  5. Step 5: Solve for x
    x = 642,401,838,472.86/654,421.80
  6. Step 6: Final answer
    x = 981,632.70

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