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Finding the Fourth Proportional to 228,642.75, 315,526.39 and 126,668.41

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Solution

The fourth proportional to 228,642.75, 315,526.39 and 126,668.41 is: 174,802.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,642.75 : 315,526.39 = 126,668.41 : x
  2. Step 2: Convert to fraction form
    228,642.75/315,526.39 = 126,668.41/x
  3. Step 3: Cross multiply
    228,642.75x = 315,526.39 × 126,668.41
  4. Step 4: Simplify right side
    228,642.75x = 39,967,225,028.85
  5. Step 5: Solve for x
    x = 39,967,225,028.85/228,642.75
  6. Step 6: Final answer
    x = 174,802.07

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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.