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Finding the Fourth Proportional to 1,744.84, 2,616.70 and 770.92

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Solution

The fourth proportional to 1,744.84, 2,616.70 and 770.92 is: 1,156.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,744.84 : 2,616.70 = 770.92 : x
  2. Step 2: Convert to fraction form
    1,744.84/2,616.70 = 770.92/x
  3. Step 3: Cross multiply
    1,744.84x = 2,616.70 × 770.92
  4. Step 4: Simplify right side
    1,744.84x = 2,017,266.36
  5. Step 5: Solve for x
    x = 2,017,266.36/1,744.84
  6. Step 6: Final answer
    x = 1,156.13

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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.