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Finding the Fourth Proportional to 463,431.87, 639,483.12 and 259,454.43

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Solution

The fourth proportional to 463,431.87, 639,483.12 and 259,454.43 is: 358,017.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,431.87 : 639,483.12 = 259,454.43 : x
  2. Step 2: Convert to fraction form
    463,431.87/639,483.12 = 259,454.43/x
  3. Step 3: Cross multiply
    463,431.87x = 639,483.12 × 259,454.43
  4. Step 4: Simplify right side
    463,431.87x = 165,916,728,394.22
  5. Step 5: Solve for x
    x = 165,916,728,394.22/463,431.87
  6. Step 6: Final answer
    x = 358,017.52

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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.