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Finding the Fourth Proportional to 228,042.40, 314,696.40 and 126,074.20

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Solution

The fourth proportional to 228,042.40, 314,696.40 and 126,074.20 is: 173,981.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,042.40 : 314,696.40 = 126,074.20 : x
  2. Step 2: Convert to fraction form
    228,042.40/314,696.40 = 126,074.20/x
  3. Step 3: Cross multiply
    228,042.40x = 314,696.40 × 126,074.20
  4. Step 4: Simplify right side
    228,042.40x = 39,675,096,872.88
  5. Step 5: Solve for x
    x = 39,675,096,872.88/228,042.40
  6. Step 6: Final answer
    x = 173,981.23

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Why These Related Problems?

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