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Finding the Fourth Proportional to 29,657.51, 40,928.39 and 16,912.61

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Solution

The fourth proportional to 29,657.51, 40,928.39 and 16,912.61 is: 23,339.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,657.51 : 40,928.39 = 16,912.61 : x
  2. Step 2: Convert to fraction form
    29,657.51/40,928.39 = 16,912.61/x
  3. Step 3: Cross multiply
    29,657.51x = 40,928.39 × 16,912.61
  4. Step 4: Simplify right side
    29,657.51x = 692,206,055.92
  5. Step 5: Solve for x
    x = 692,206,055.92/29,657.51
  6. Step 6: Final answer
    x = 23,339.99

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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.