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Finding the Fourth Proportional to 99,571.36, 149,310 and 36,347.60

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Solution

The fourth proportional to 99,571.36, 149,310 and 36,347.60 is: 54,504.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,571.36 : 149,310 = 36,347.60 : x
  2. Step 2: Convert to fraction form
    99,571.36/149,310 = 36,347.60/x
  3. Step 3: Cross multiply
    99,571.36x = 149,310 × 36,347.60
  4. Step 4: Simplify right side
    99,571.36x = 5,427,060,156
  5. Step 5: Solve for x
    x = 5,427,060,156/99,571.36
  6. Step 6: Final answer
    x = 54,504.23

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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.