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Finding the Fourth Proportional to 325,638.30, 488,457.45 and 286,272.30

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Solution

The fourth proportional to 325,638.30, 488,457.45 and 286,272.30 is: 429,408.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,638.30 : 488,457.45 = 286,272.30 : x
  2. Step 2: Convert to fraction form
    325,638.30/488,457.45 = 286,272.30/x
  3. Step 3: Cross multiply
    325,638.30x = 488,457.45 × 286,272.30
  4. Step 4: Simplify right side
    325,638.30x = 139,831,837,663.64
  5. Step 5: Solve for x
    x = 139,831,837,663.64/325,638.30
  6. Step 6: Final answer
    x = 429,408.45

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