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Finding the Fourth Proportional to 1,157.78, 1,736.49 and 335.88

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Solution

The fourth proportional to 1,157.78, 1,736.49 and 335.88 is: 503.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,157.78 : 1,736.49 = 335.88 : x
  2. Step 2: Convert to fraction form
    1,157.78/1,736.49 = 335.88/x
  3. Step 3: Cross multiply
    1,157.78x = 1,736.49 × 335.88
  4. Step 4: Simplify right side
    1,157.78x = 583,251.63
  5. Step 5: Solve for x
    x = 583,251.63/1,157.78
  6. Step 6: Final answer
    x = 503.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.