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Finding the Fourth Proportional to 488,901.21, 674,649.54 and 271,120.92

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Solution

The fourth proportional to 488,901.21, 674,649.54 and 271,120.92 is: 374,127.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,901.21 : 674,649.54 = 271,120.92 : x
  2. Step 2: Convert to fraction form
    488,901.21/674,649.54 = 271,120.92/x
  3. Step 3: Cross multiply
    488,901.21x = 674,649.54 × 271,120.92
  4. Step 4: Simplify right side
    488,901.21x = 182,911,603,962.38
  5. Step 5: Solve for x
    x = 182,911,603,962.38/488,901.21
  6. Step 6: Final answer
    x = 374,127.94

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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.