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Finding the Fourth Proportional to 351,516.60, 485,090.47 and 190,367.96

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Solution

The fourth proportional to 351,516.60, 485,090.47 and 190,367.96 is: 262,706.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,516.60 : 485,090.47 = 190,367.96 : x
  2. Step 2: Convert to fraction form
    351,516.60/485,090.47 = 190,367.96/x
  3. Step 3: Cross multiply
    351,516.60x = 485,090.47 × 190,367.96
  4. Step 4: Simplify right side
    351,516.60x = 92,345,683,189.34
  5. Step 5: Solve for x
    x = 92,345,683,189.34/351,516.60
  6. Step 6: Final answer
    x = 262,706.46

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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.