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Finding the Fourth Proportional to 125,409.51, 188,120.55 and 41,135.58

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Solution

The fourth proportional to 125,409.51, 188,120.55 and 41,135.58 is: 61,705.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,409.51 : 188,120.55 = 41,135.58 : x
  2. Step 2: Convert to fraction form
    125,409.51/188,120.55 = 41,135.58/x
  3. Step 3: Cross multiply
    125,409.51x = 188,120.55 × 41,135.58
  4. Step 4: Simplify right side
    125,409.51x = 7,738,447,934.17
  5. Step 5: Solve for x
    x = 7,738,447,934.17/125,409.51
  6. Step 6: Final answer
    x = 61,705.43

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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.