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Finding the Fourth Proportional to 445,561.71, 668,517.53 and 196,068.75

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Solution

The fourth proportional to 445,561.71, 668,517.53 and 196,068.75 is: 294,180.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,561.71 : 668,517.53 = 196,068.75 : x
  2. Step 2: Convert to fraction form
    445,561.71/668,517.53 = 196,068.75/x
  3. Step 3: Cross multiply
    445,561.71x = 668,517.53 × 196,068.75
  4. Step 4: Simplify right side
    445,561.71x = 131,075,395,479.84
  5. Step 5: Solve for x
    x = 131,075,395,479.84/445,561.71
  6. Step 6: Final answer
    x = 294,180.12

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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.