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Finding the Fourth Proportional to 125,616.89, 188,405.55 and 104,405.81

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Solution

The fourth proportional to 125,616.89, 188,405.55 and 104,405.81 is: 156,592.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,616.89 : 188,405.55 = 104,405.81 : x
  2. Step 2: Convert to fraction form
    125,616.89/188,405.55 = 104,405.81/x
  3. Step 3: Cross multiply
    125,616.89x = 188,405.55 × 104,405.81
  4. Step 4: Simplify right side
    125,616.89x = 19,670,633,114.22
  5. Step 5: Solve for x
    x = 19,670,633,114.22/125,616.89
  6. Step 6: Final answer
    x = 156,592.27

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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.