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Finding the Fourth Proportional to 228,608.65, 315,448.69 and 126,608.93

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Solution

The fourth proportional to 228,608.65, 315,448.69 and 126,608.93 is: 174,703.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,608.65 : 315,448.69 = 126,608.93 : x
  2. Step 2: Convert to fraction form
    228,608.65/315,448.69 = 126,608.93/x
  3. Step 3: Cross multiply
    228,608.65x = 315,448.69 × 126,608.93
  4. Step 4: Simplify right side
    228,608.65x = 39,938,621,110.80
  5. Step 5: Solve for x
    x = 39,938,621,110.80/228,608.65
  6. Step 6: Final answer
    x = 174,703.02

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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.