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Finding the Fourth Proportional to 1,905.71, 2,854.13 and 1,853.17

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Solution

The fourth proportional to 1,905.71, 2,854.13 and 1,853.17 is: 2,775.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.71 : 2,854.13 = 1,853.17 : x
  2. Step 2: Convert to fraction form
    1,905.71/2,854.13 = 1,853.17/x
  3. Step 3: Cross multiply
    1,905.71x = 2,854.13 × 1,853.17
  4. Step 4: Simplify right side
    1,905.71x = 5,289,171.69
  5. Step 5: Solve for x
    x = 5,289,171.69/1,905.71
  6. Step 6: Final answer
    x = 2,775.44

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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.