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Finding the Fourth Proportional to 29,399.94, 40,571.58 and 15,970.91

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Solution

The fourth proportional to 29,399.94, 40,571.58 and 15,970.91 is: 22,039.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,399.94 : 40,571.58 = 15,970.91 : x
  2. Step 2: Convert to fraction form
    29,399.94/40,571.58 = 15,970.91/x
  3. Step 3: Cross multiply
    29,399.94x = 40,571.58 × 15,970.91
  4. Step 4: Simplify right side
    29,399.94x = 647,965,080.93
  5. Step 5: Solve for x
    x = 647,965,080.93/29,399.94
  6. Step 6: Final answer
    x = 22,039.67

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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.