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Finding the Fourth Proportional to 19,114.88, 26,339.64 and 14,638.64

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Solution

The fourth proportional to 19,114.88, 26,339.64 and 14,638.64 is: 20,171.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,114.88 : 26,339.64 = 14,638.64 : x
  2. Step 2: Convert to fraction form
    19,114.88/26,339.64 = 14,638.64/x
  3. Step 3: Cross multiply
    19,114.88x = 26,339.64 × 14,638.64
  4. Step 4: Simplify right side
    19,114.88x = 385,576,507.69
  5. Step 5: Solve for x
    x = 385,576,507.69/19,114.88
  6. Step 6: Final answer
    x = 20,171.54

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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.