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Finding the Fourth Proportional to 123,381.48, 184,605.60 and 115,916.52

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Solution

The fourth proportional to 123,381.48, 184,605.60 and 115,916.52 is: 173,436.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,381.48 : 184,605.60 = 115,916.52 : x
  2. Step 2: Convert to fraction form
    123,381.48/184,605.60 = 115,916.52/x
  3. Step 3: Cross multiply
    123,381.48x = 184,605.60 × 115,916.52
  4. Step 4: Simplify right side
    123,381.48x = 21,398,838,724.51
  5. Step 5: Solve for x
    x = 21,398,838,724.51/123,381.48
  6. Step 6: Final answer
    x = 173,436.39

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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.