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Finding the Fourth Proportional to 491,161.05, 677,841.62 and 276,288.30

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Solution

The fourth proportional to 491,161.05, 677,841.62 and 276,288.30 is: 381,300.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,161.05 : 677,841.62 = 276,288.30 : x
  2. Step 2: Convert to fraction form
    491,161.05/677,841.62 = 276,288.30/x
  3. Step 3: Cross multiply
    491,161.05x = 677,841.62 × 276,288.30
  4. Step 4: Simplify right side
    491,161.05x = 187,279,707,477.61
  5. Step 5: Solve for x
    x = 187,279,707,477.61/491,161.05
  6. Step 6: Final answer
    x = 381,300.00

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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.