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Finding the Fourth Proportional to 397,338.75, 548,309.61 and 225,254.25

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Solution

The fourth proportional to 397,338.75, 548,309.61 and 225,254.25 is: 310,840.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,338.75 : 548,309.61 = 225,254.25 : x
  2. Step 2: Convert to fraction form
    397,338.75/548,309.61 = 225,254.25/x
  3. Step 3: Cross multiply
    397,338.75x = 548,309.61 × 225,254.25
  4. Step 4: Simplify right side
    397,338.75x = 123,509,069,968.34
  5. Step 5: Solve for x
    x = 123,509,069,968.34/397,338.75
  6. Step 6: Final answer
    x = 310,840.74

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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.