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Finding the Fourth Proportional to 406,399.48, 560,806.60 and 225,100.83

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Solution

The fourth proportional to 406,399.48, 560,806.60 and 225,100.83 is: 310,625.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,399.48 : 560,806.60 = 225,100.83 : x
  2. Step 2: Convert to fraction form
    406,399.48/560,806.60 = 225,100.83/x
  3. Step 3: Cross multiply
    406,399.48x = 560,806.60 × 225,100.83
  4. Step 4: Simplify right side
    406,399.48x = 126,238,031,129.48
  5. Step 5: Solve for x
    x = 126,238,031,129.48/406,399.48
  6. Step 6: Final answer
    x = 310,625.47

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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.