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Finding the Fourth Proportional to 352,076.74, 485,866.14 and 190,931.74

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Solution

The fourth proportional to 352,076.74, 485,866.14 and 190,931.74 is: 263,485.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,076.74 : 485,866.14 = 190,931.74 : x
  2. Step 2: Convert to fraction form
    352,076.74/485,866.14 = 190,931.74/x
  3. Step 3: Cross multiply
    352,076.74x = 485,866.14 × 190,931.74
  4. Step 4: Simplify right side
    352,076.74x = 92,767,267,517.28
  5. Step 5: Solve for x
    x = 92,767,267,517.28/352,076.74
  6. Step 6: Final answer
    x = 263,485.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.