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Finding the Fourth Proportional to 660,476.10, 989,290.68 and 446,064.99

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Solution

The fourth proportional to 660,476.10, 989,290.68 and 446,064.99 is: 668,136.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,476.10 : 989,290.68 = 446,064.99 : x
  2. Step 2: Convert to fraction form
    660,476.10/989,290.68 = 446,064.99/x
  3. Step 3: Cross multiply
    660,476.10x = 989,290.68 × 446,064.99
  4. Step 4: Simplify right side
    660,476.10x = 441,287,938,954.04
  5. Step 5: Solve for x
    x = 441,287,938,954.04/660,476.10
  6. Step 6: Final answer
    x = 668,136.12

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