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Finding the Fourth Proportional to 351,656.31, 485,285.11 and 190,515.45

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Solution

The fourth proportional to 351,656.31, 485,285.11 and 190,515.45 is: 262,911.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,656.31 : 485,285.11 = 190,515.45 : x
  2. Step 2: Convert to fraction form
    351,656.31/485,285.11 = 190,515.45/x
  3. Step 3: Cross multiply
    351,656.31x = 485,285.11 × 190,515.45
  4. Step 4: Simplify right side
    351,656.31x = 92,454,311,109.95
  5. Step 5: Solve for x
    x = 92,454,311,109.95/351,656.31
  6. Step 6: Final answer
    x = 262,911.00

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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.