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Finding the Fourth Proportional to 438,464.21, 605,079.65 and 237,260.21

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Solution

The fourth proportional to 438,464.21, 605,079.65 and 237,260.21 is: 327,418.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,464.21 : 605,079.65 = 237,260.21 : x
  2. Step 2: Convert to fraction form
    438,464.21/605,079.65 = 237,260.21/x
  3. Step 3: Cross multiply
    438,464.21x = 605,079.65 × 237,260.21
  4. Step 4: Simplify right side
    438,464.21x = 143,561,322,393.48
  5. Step 5: Solve for x
    x = 143,561,322,393.48/438,464.21
  6. Step 6: Final answer
    x = 327,418.57

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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.