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Finding the Fourth Proportional to 2,095.50, 2,891.80 and 1,164

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Solution

The fourth proportional to 2,095.50, 2,891.80 and 1,164 is: 1,606.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,095.50 : 2,891.80 = 1,164 : x
  2. Step 2: Convert to fraction form
    2,095.50/2,891.80 = 1,164/x
  3. Step 3: Cross multiply
    2,095.50x = 2,891.80 × 1,164
  4. Step 4: Simplify right side
    2,095.50x = 3,366,055.20
  5. Step 5: Solve for x
    x = 3,366,055.20/2,095.50
  6. Step 6: Final answer
    x = 1,606.33

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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.