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Finding the Fourth Proportional to 101,571.21, 152,299.80 and 69,586.40

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Solution

The fourth proportional to 101,571.21, 152,299.80 and 69,586.40 is: 104,340.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,571.21 : 152,299.80 = 69,586.40 : x
  2. Step 2: Convert to fraction form
    101,571.21/152,299.80 = 69,586.40/x
  3. Step 3: Cross multiply
    101,571.21x = 152,299.80 × 69,586.40
  4. Step 4: Simplify right side
    101,571.21x = 10,597,994,041.22
  5. Step 5: Solve for x
    x = 10,597,994,041.22/101,571.21
  6. Step 6: Final answer
    x = 104,340.53

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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.