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Finding the Fourth Proportional to 2,355.98, 3,534.10 and 712.69

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Solution

The fourth proportional to 2,355.98, 3,534.10 and 712.69 is: 1,069.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,355.98 : 3,534.10 = 712.69 : x
  2. Step 2: Convert to fraction form
    2,355.98/3,534.10 = 712.69/x
  3. Step 3: Cross multiply
    2,355.98x = 3,534.10 × 712.69
  4. Step 4: Simplify right side
    2,355.98x = 2,518,717.73
  5. Step 5: Solve for x
    x = 2,518,717.73/2,355.98
  6. Step 6: Final answer
    x = 1,069.07

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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.