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Finding the Fourth Proportional to 7,274.81, 10,039.55 and 4,131

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Solution

The fourth proportional to 7,274.81, 10,039.55 and 4,131 is: 5,700.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,274.81 : 10,039.55 = 4,131 : x
  2. Step 2: Convert to fraction form
    7,274.81/10,039.55 = 4,131/x
  3. Step 3: Cross multiply
    7,274.81x = 10,039.55 × 4,131
  4. Step 4: Simplify right side
    7,274.81x = 41,473,360.40
  5. Step 5: Solve for x
    x = 41,473,360.40/7,274.81
  6. Step 6: Final answer
    x = 5,700.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.