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Finding the Fourth Proportional to 323,626.40, 485,655.54 and 113,264.36

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Solution

The fourth proportional to 323,626.40, 485,655.54 and 113,264.36 is: 169,972.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,626.40 : 485,655.54 = 113,264.36 : x
  2. Step 2: Convert to fraction form
    323,626.40/485,655.54 = 113,264.36/x
  3. Step 3: Cross multiply
    323,626.40x = 485,655.54 × 113,264.36
  4. Step 4: Simplify right side
    323,626.40x = 55,007,463,918.55
  5. Step 5: Solve for x
    x = 55,007,463,918.55/323,626.40
  6. Step 6: Final answer
    x = 169,972.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.