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Finding the Fourth Proportional to 170,062.20, 254,874.60 and 103,431.60

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Solution

The fourth proportional to 170,062.20, 254,874.60 and 103,431.60 is: 155,014.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,062.20 : 254,874.60 = 103,431.60 : x
  2. Step 2: Convert to fraction form
    170,062.20/254,874.60 = 103,431.60/x
  3. Step 3: Cross multiply
    170,062.20x = 254,874.60 × 103,431.60
  4. Step 4: Simplify right side
    170,062.20x = 26,362,087,677.36
  5. Step 5: Solve for x
    x = 26,362,087,677.36/170,062.20
  6. Step 6: Final answer
    x = 155,014.39

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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.