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Finding the Fourth Proportional to 14,955.96, 20,489.74 and 14,395.44

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Solution

The fourth proportional to 14,955.96, 20,489.74 and 14,395.44 is: 19,721.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,955.96 : 20,489.74 = 14,395.44 : x
  2. Step 2: Convert to fraction form
    14,955.96/20,489.74 = 14,395.44/x
  3. Step 3: Cross multiply
    14,955.96x = 20,489.74 × 14,395.44
  4. Step 4: Simplify right side
    14,955.96x = 294,958,822.79
  5. Step 5: Solve for x
    x = 294,958,822.79/14,955.96
  6. Step 6: Final answer
    x = 19,721.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.