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Finding the Fourth Proportional to 202,015.50, 303,066.99 and 77,356.50

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Solution

The fourth proportional to 202,015.50, 303,066.99 and 77,356.50 is: 116,051.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,015.50 : 303,066.99 = 77,356.50 : x
  2. Step 2: Convert to fraction form
    202,015.50/303,066.99 = 77,356.50/x
  3. Step 3: Cross multiply
    202,015.50x = 303,066.99 × 77,356.50
  4. Step 4: Simplify right side
    202,015.50x = 23,444,201,611.94
  5. Step 5: Solve for x
    x = 23,444,201,611.94/202,015.50
  6. Step 6: Final answer
    x = 116,051.50

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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.