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Finding the Fourth Proportional to 2,690.35, 4,035.06 and 716.00

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Solution

The fourth proportional to 2,690.35, 4,035.06 and 716.00 is: 1,073.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.35 : 4,035.06 = 716.00 : x
  2. Step 2: Convert to fraction form
    2,690.35/4,035.06 = 716.00/x
  3. Step 3: Cross multiply
    2,690.35x = 4,035.06 × 716.00
  4. Step 4: Simplify right side
    2,690.35x = 2,889,113.05
  5. Step 5: Solve for x
    x = 2,889,113.05/2,690.35
  6. Step 6: Final answer
    x = 1,073.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.