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Finding the Fourth Proportional to 1,886.73, 2,830.09 and 913.65

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Solution

The fourth proportional to 1,886.73, 2,830.09 and 913.65 is: 1,370.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,886.73 : 2,830.09 = 913.65 : x
  2. Step 2: Convert to fraction form
    1,886.73/2,830.09 = 913.65/x
  3. Step 3: Cross multiply
    1,886.73x = 2,830.09 × 913.65
  4. Step 4: Simplify right side
    1,886.73x = 2,585,711.73
  5. Step 5: Solve for x
    x = 2,585,711.73/1,886.73
  6. Step 6: Final answer
    x = 1,370.47

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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.