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Finding the Fourth Proportional to 326,618.40, 450,782.64 and 199,367.76

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Solution

The fourth proportional to 326,618.40, 450,782.64 and 199,367.76 is: 275,157.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,618.40 : 450,782.64 = 199,367.76 : x
  2. Step 2: Convert to fraction form
    326,618.40/450,782.64 = 199,367.76/x
  3. Step 3: Cross multiply
    326,618.40x = 450,782.64 × 199,367.76
  4. Step 4: Simplify right side
    326,618.40x = 89,871,525,183.69
  5. Step 5: Solve for x
    x = 89,871,525,183.69/326,618.40
  6. Step 6: Final answer
    x = 275,157.57

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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.