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Finding the Fourth Proportional to 14,490.21, 20,098.79 and 14,106.11

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Solution

The fourth proportional to 14,490.21, 20,098.79 and 14,106.11 is: 19,566.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,490.21 : 20,098.79 = 14,106.11 : x
  2. Step 2: Convert to fraction form
    14,490.21/20,098.79 = 14,106.11/x
  3. Step 3: Cross multiply
    14,490.21x = 20,098.79 × 14,106.11
  4. Step 4: Simplify right side
    14,490.21x = 283,515,722.32
  5. Step 5: Solve for x
    x = 283,515,722.32/14,490.21
  6. Step 6: Final answer
    x = 19,566.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.