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Finding the Fourth Proportional to 216,219.53, 324,220.41 and 72,074.32

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Solution

The fourth proportional to 216,219.53, 324,220.41 and 72,074.32 is: 108,075.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,219.53 : 324,220.41 = 72,074.32 : x
  2. Step 2: Convert to fraction form
    216,219.53/324,220.41 = 72,074.32/x
  3. Step 3: Cross multiply
    216,219.53x = 324,220.41 × 72,074.32
  4. Step 4: Simplify right side
    216,219.53x = 23,367,965,580.87
  5. Step 5: Solve for x
    x = 23,367,965,580.87/216,219.53
  6. Step 6: Final answer
    x = 108,075.18

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.