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Finding the Fourth Proportional to 268,806.60, 403,428.60 and 260,058.60

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Solution

The fourth proportional to 268,806.60, 403,428.60 and 260,058.60 is: 390,299.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,806.60 : 403,428.60 = 260,058.60 : x
  2. Step 2: Convert to fraction form
    268,806.60/403,428.60 = 260,058.60/x
  3. Step 3: Cross multiply
    268,806.60x = 403,428.60 × 260,058.60
  4. Step 4: Simplify right side
    268,806.60x = 104,915,076,915.96
  5. Step 5: Solve for x
    x = 104,915,076,915.96/268,806.60
  6. Step 6: Final answer
    x = 390,299.48

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