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Finding the Fourth Proportional to 1,696.50, 2,341.26 and 997.74

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Solution

The fourth proportional to 1,696.50, 2,341.26 and 997.74 is: 1,376.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,696.50 : 2,341.26 = 997.74 : x
  2. Step 2: Convert to fraction form
    1,696.50/2,341.26 = 997.74/x
  3. Step 3: Cross multiply
    1,696.50x = 2,341.26 × 997.74
  4. Step 4: Simplify right side
    1,696.50x = 2,335,968.75
  5. Step 5: Solve for x
    x = 2,335,968.75/1,696.50
  6. Step 6: Final answer
    x = 1,376.93

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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.