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Finding the Fourth Proportional to 228,409.12, 315,200.76 and 126,432.39

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Solution

The fourth proportional to 228,409.12, 315,200.76 and 126,432.39 is: 174,474.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,409.12 : 315,200.76 = 126,432.39 : x
  2. Step 2: Convert to fraction form
    228,409.12/315,200.76 = 126,432.39/x
  3. Step 3: Cross multiply
    228,409.12x = 315,200.76 × 126,432.39
  4. Step 4: Simplify right side
    228,409.12x = 39,851,585,416.62
  5. Step 5: Solve for x
    x = 39,851,585,416.62/228,409.12
  6. Step 6: Final answer
    x = 174,474.58

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.