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Finding the Fourth Proportional to 1,164.22, 1,605.31 and 848.93

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Solution

The fourth proportional to 1,164.22, 1,605.31 and 848.93 is: 1,170.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,164.22 : 1,605.31 = 848.93 : x
  2. Step 2: Convert to fraction form
    1,164.22/1,605.31 = 848.93/x
  3. Step 3: Cross multiply
    1,164.22x = 1,605.31 × 848.93
  4. Step 4: Simplify right side
    1,164.22x = 1,362,794.87
  5. Step 5: Solve for x
    x = 1,362,794.87/1,164.22
  6. Step 6: Final answer
    x = 1,170.56

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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.