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Finding the Fourth Proportional to 463,387.57, 639,326.14 and 259,408.45

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Solution

The fourth proportional to 463,387.57, 639,326.14 and 259,408.45 is: 357,900.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,387.57 : 639,326.14 = 259,408.45 : x
  2. Step 2: Convert to fraction form
    463,387.57/639,326.14 = 259,408.45/x
  3. Step 3: Cross multiply
    463,387.57x = 639,326.14 × 259,408.45
  4. Step 4: Simplify right side
    463,387.57x = 165,846,603,021.88
  5. Step 5: Solve for x
    x = 165,846,603,021.88/463,387.57
  6. Step 6: Final answer
    x = 357,900.41

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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.