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Finding the Fourth Proportional to 14,423.88, 19,894.54 and 11,137.53

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Solution

The fourth proportional to 14,423.88, 19,894.54 and 11,137.53 is: 15,361.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,423.88 : 19,894.54 = 11,137.53 : x
  2. Step 2: Convert to fraction form
    14,423.88/19,894.54 = 11,137.53/x
  3. Step 3: Cross multiply
    14,423.88x = 19,894.54 × 11,137.53
  4. Step 4: Simplify right side
    14,423.88x = 221,576,036.09
  5. Step 5: Solve for x
    x = 221,576,036.09/14,423.88
  6. Step 6: Final answer
    x = 15,361.75

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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.