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Finding the Fourth Proportional to 235,656.30, 353,431.18 and 67,172.98

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Solution

The fourth proportional to 235,656.30, 353,431.18 and 67,172.98 is: 100,744.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,656.30 : 353,431.18 = 67,172.98 : x
  2. Step 2: Convert to fraction form
    235,656.30/353,431.18 = 67,172.98/x
  3. Step 3: Cross multiply
    235,656.30x = 353,431.18 × 67,172.98
  4. Step 4: Simplify right side
    235,656.30x = 23,741,025,585.52
  5. Step 5: Solve for x
    x = 23,741,025,585.52/235,656.30
  6. Step 6: Final answer
    x = 100,744.29

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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.