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Finding the Fourth Proportional to 1,054.49, 1,455.36 and 1,022.23

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Solution

The fourth proportional to 1,054.49, 1,455.36 and 1,022.23 is: 1,410.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,054.49 : 1,455.36 = 1,022.23 : x
  2. Step 2: Convert to fraction form
    1,054.49/1,455.36 = 1,022.23/x
  3. Step 3: Cross multiply
    1,054.49x = 1,455.36 × 1,022.23
  4. Step 4: Simplify right side
    1,054.49x = 1,487,705.18
  5. Step 5: Solve for x
    x = 1,487,705.18/1,054.49
  6. Step 6: Final answer
    x = 1,410.83

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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.