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Finding the Fourth Proportional to 22,995.64, 31,728.36 and 14,039.88

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Solution

The fourth proportional to 22,995.64, 31,728.36 and 14,039.88 is: 19,371.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,995.64 : 31,728.36 = 14,039.88 : x
  2. Step 2: Convert to fraction form
    22,995.64/31,728.36 = 14,039.88/x
  3. Step 3: Cross multiply
    22,995.64x = 31,728.36 × 14,039.88
  4. Step 4: Simplify right side
    22,995.64x = 445,462,367.00
  5. Step 5: Solve for x
    x = 445,462,367.00/22,995.64
  6. Step 6: Final answer
    x = 19,371.60

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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.