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Finding the Fourth Proportional to 3,699.79, 5,549.68 and 1,945.23

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Solution

The fourth proportional to 3,699.79, 5,549.68 and 1,945.23 is: 2,917.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,699.79 : 5,549.68 = 1,945.23 : x
  2. Step 2: Convert to fraction form
    3,699.79/5,549.68 = 1,945.23/x
  3. Step 3: Cross multiply
    3,699.79x = 5,549.68 × 1,945.23
  4. Step 4: Simplify right side
    3,699.79x = 10,795,432.67
  5. Step 5: Solve for x
    x = 10,795,432.67/3,699.79
  6. Step 6: Final answer
    x = 2,917.85

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1.5x scale

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.