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Finding the Fourth Proportional to 5,153.71, 7,731.96 and 3,674.80

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Solution

The fourth proportional to 5,153.71, 7,731.96 and 3,674.80 is: 5,513.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,153.71 : 7,731.96 = 3,674.80 : x
  2. Step 2: Convert to fraction form
    5,153.71/7,731.96 = 3,674.80/x
  3. Step 3: Cross multiply
    5,153.71x = 7,731.96 × 3,674.80
  4. Step 4: Simplify right side
    5,153.71x = 28,413,406.61
  5. Step 5: Solve for x
    x = 28,413,406.61/5,153.71
  6. Step 6: Final answer
    x = 5,513.19

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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.