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Finding the Fourth Proportional to 1,174.47, 1,617.06 and 893.80

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Solution

The fourth proportional to 1,174.47, 1,617.06 and 893.80 is: 1,230.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,174.47 : 1,617.06 = 893.80 : x
  2. Step 2: Convert to fraction form
    1,174.47/1,617.06 = 893.80/x
  3. Step 3: Cross multiply
    1,174.47x = 1,617.06 × 893.80
  4. Step 4: Simplify right side
    1,174.47x = 1,445,333.60
  5. Step 5: Solve for x
    x = 1,445,333.60/1,174.47
  6. Step 6: Final answer
    x = 1,230.63

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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.