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Finding the Fourth Proportional to 31,179.54, 46,738.51 and 12,448.29

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Solution

The fourth proportional to 31,179.54, 46,738.51 and 12,448.29 is: 18,660.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,179.54 : 46,738.51 = 12,448.29 : x
  2. Step 2: Convert to fraction form
    31,179.54/46,738.51 = 12,448.29/x
  3. Step 3: Cross multiply
    31,179.54x = 46,738.51 × 12,448.29
  4. Step 4: Simplify right side
    31,179.54x = 581,814,526.65
  5. Step 5: Solve for x
    x = 581,814,526.65/31,179.54
  6. Step 6: Final answer
    x = 18,660.14

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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.