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Finding the Fourth Proportional to 707,776.80, 1,061,658.60 and 286,952.64

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Solution

The fourth proportional to 707,776.80, 1,061,658.60 and 286,952.64 is: 430,426.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,776.80 : 1,061,658.60 = 286,952.64 : x
  2. Step 2: Convert to fraction form
    707,776.80/1,061,658.60 = 286,952.64/x
  3. Step 3: Cross multiply
    707,776.80x = 1,061,658.60 × 286,952.64
  4. Step 4: Simplify right side
    707,776.80x = 304,645,738,048.70
  5. Step 5: Solve for x
    x = 304,645,738,048.70/707,776.80
  6. Step 6: Final answer
    x = 430,426.28

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