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Finding the Fourth Proportional to 228,613.32, 315,486.33 and 126,645.38

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Solution

The fourth proportional to 228,613.32, 315,486.33 and 126,645.38 is: 174,770.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,613.32 : 315,486.33 = 126,645.38 : x
  2. Step 2: Convert to fraction form
    228,613.32/315,486.33 = 126,645.38/x
  3. Step 3: Cross multiply
    228,613.32x = 315,486.33 × 126,645.38
  4. Step 4: Simplify right side
    228,613.32x = 39,954,884,570.22
  5. Step 5: Solve for x
    x = 39,954,884,570.22/228,613.32
  6. Step 6: Final answer
    x = 174,770.59

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1.5x scale

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.