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Finding the Fourth Proportional to 463,108.69, 639,124.32 and 259,180.03

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Solution

The fourth proportional to 463,108.69, 639,124.32 and 259,180.03 is: 357,687.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,108.69 : 639,124.32 = 259,180.03 : x
  2. Step 2: Convert to fraction form
    463,108.69/639,124.32 = 259,180.03/x
  3. Step 3: Cross multiply
    463,108.69x = 639,124.32 × 259,180.03
  4. Step 4: Simplify right side
    463,108.69x = 165,648,260,431.33
  5. Step 5: Solve for x
    x = 165,648,260,431.33/463,108.69
  6. Step 6: Final answer
    x = 357,687.65

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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.