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Finding the Fourth Proportional to 641,955.21, 963,080.44 and 192,684.59

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Solution

The fourth proportional to 641,955.21, 963,080.44 and 192,684.59 is: 289,071.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,955.21 : 963,080.44 = 192,684.59 : x
  2. Step 2: Convert to fraction form
    641,955.21/963,080.44 = 192,684.59/x
  3. Step 3: Cross multiply
    641,955.21x = 963,080.44 × 192,684.59
  4. Step 4: Simplify right side
    641,955.21x = 185,570,759,057.54
  5. Step 5: Solve for x
    x = 185,570,759,057.54/641,955.21
  6. Step 6: Final answer
    x = 289,071.19

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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.