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Finding the Fourth Proportional to 235,590.90, 353,381.78 and 67,112.31

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Solution

The fourth proportional to 235,590.90, 353,381.78 and 67,112.31 is: 100,667.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,590.90 : 353,381.78 = 67,112.31 : x
  2. Step 2: Convert to fraction form
    235,590.90/353,381.78 = 67,112.31/x
  3. Step 3: Cross multiply
    235,590.90x = 353,381.78 × 67,112.31
  4. Step 4: Simplify right side
    235,590.90x = 23,716,267,232.15
  5. Step 5: Solve for x
    x = 23,716,267,232.15/235,590.90
  6. Step 6: Final answer
    x = 100,667.16

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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.