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Finding the Fourth Proportional to 406,668.26, 561,193.67 and 225,378.60

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Solution

The fourth proportional to 406,668.26, 561,193.67 and 225,378.60 is: 311,017.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,668.26 : 561,193.67 = 225,378.60 : x
  2. Step 2: Convert to fraction form
    406,668.26/561,193.67 = 225,378.60/x
  3. Step 3: Cross multiply
    406,668.26x = 561,193.67 × 225,378.60
  4. Step 4: Simplify right side
    406,668.26x = 126,481,043,673.46
  5. Step 5: Solve for x
    x = 126,481,043,673.46/406,668.26
  6. Step 6: Final answer
    x = 311,017.74

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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.