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Finding the Fourth Proportional to 31,698.99, 43,742.66 and 17,358.99

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Solution

The fourth proportional to 31,698.99, 43,742.66 and 17,358.99 is: 23,954.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,698.99 : 43,742.66 = 17,358.99 : x
  2. Step 2: Convert to fraction form
    31,698.99/43,742.66 = 17,358.99/x
  3. Step 3: Cross multiply
    31,698.99x = 43,742.66 × 17,358.99
  4. Step 4: Simplify right side
    31,698.99x = 759,328,310.72
  5. Step 5: Solve for x
    x = 759,328,310.72/31,698.99
  6. Step 6: Final answer
    x = 23,954.34

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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.