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Finding the Fourth Proportional to 438,910.68, 605,689.48 and 245,322.92

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Solution

The fourth proportional to 438,910.68, 605,689.48 and 245,322.92 is: 338,541.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,910.68 : 605,689.48 = 245,322.92 : x
  2. Step 2: Convert to fraction form
    438,910.68/605,689.48 = 245,322.92/x
  3. Step 3: Cross multiply
    438,910.68x = 605,689.48 × 245,322.92
  4. Step 4: Simplify right side
    438,910.68x = 148,589,511,846.88
  5. Step 5: Solve for x
    x = 148,589,511,846.88/438,910.68
  6. Step 6: Final answer
    x = 338,541.57

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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.