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Finding the Fourth Proportional to 2,742.76, 3,785.02 and 1,500.76

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Solution

The fourth proportional to 2,742.76, 3,785.02 and 1,500.76 is: 2,071.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,742.76 : 3,785.02 = 1,500.76 : x
  2. Step 2: Convert to fraction form
    2,742.76/3,785.02 = 1,500.76/x
  3. Step 3: Cross multiply
    2,742.76x = 3,785.02 × 1,500.76
  4. Step 4: Simplify right side
    2,742.76x = 5,680,406.62
  5. Step 5: Solve for x
    x = 5,680,406.62/2,742.76
  6. Step 6: Final answer
    x = 2,071.05

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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.