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Finding the Fourth Proportional to 3,258.61, 4,887.93 and 793.44

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Solution

The fourth proportional to 3,258.61, 4,887.93 and 793.44 is: 1,190.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,258.61 : 4,887.93 = 793.44 : x
  2. Step 2: Convert to fraction form
    3,258.61/4,887.93 = 793.44/x
  3. Step 3: Cross multiply
    3,258.61x = 4,887.93 × 793.44
  4. Step 4: Simplify right side
    3,258.61x = 3,878,279.18
  5. Step 5: Solve for x
    x = 3,878,279.18/3,258.61
  6. Step 6: Final answer
    x = 1,190.16

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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.