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Finding the Fourth Proportional to 201,924, 303,015.60 and 91,116

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Solution

The fourth proportional to 201,924, 303,015.60 and 91,116 is: 136,732.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,924 : 303,015.60 = 91,116 : x
  2. Step 2: Convert to fraction form
    201,924/303,015.60 = 91,116/x
  3. Step 3: Cross multiply
    201,924x = 303,015.60 × 91,116
  4. Step 4: Simplify right side
    201,924x = 27,609,569,409.60
  5. Step 5: Solve for x
    x = 27,609,569,409.60/201,924
  6. Step 6: Final answer
    x = 136,732.48

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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.