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Finding the Fourth Proportional to 470,828.40, 705,205.80 and 418,297.20

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Solution

The fourth proportional to 470,828.40, 705,205.80 and 418,297.20 is: 626,524.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,828.40 : 705,205.80 = 418,297.20 : x
  2. Step 2: Convert to fraction form
    470,828.40/705,205.80 = 418,297.20/x
  3. Step 3: Cross multiply
    470,828.40x = 705,205.80 × 418,297.20
  4. Step 4: Simplify right side
    470,828.40x = 294,985,611,563.76
  5. Step 5: Solve for x
    x = 294,985,611,563.76/470,828.40
  6. Step 6: Final answer
    x = 626,524.68

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