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Finding the Fourth Proportional to 234,699.90, 351,909.26 and 74,706.72

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Solution

The fourth proportional to 234,699.90, 351,909.26 and 74,706.72 is: 112,015.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,699.90 : 351,909.26 = 74,706.72 : x
  2. Step 2: Convert to fraction form
    234,699.90/351,909.26 = 74,706.72/x
  3. Step 3: Cross multiply
    234,699.90x = 351,909.26 × 74,706.72
  4. Step 4: Simplify right side
    234,699.90x = 26,289,986,552.23
  5. Step 5: Solve for x
    x = 26,289,986,552.23/234,699.90
  6. Step 6: Final answer
    x = 112,015.33

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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.