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Finding the Fourth Proportional to 14,311.34, 21,473.16 and 6,921.32

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Solution

The fourth proportional to 14,311.34, 21,473.16 and 6,921.32 is: 10,384.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,311.34 : 21,473.16 = 6,921.32 : x
  2. Step 2: Convert to fraction form
    14,311.34/21,473.16 = 6,921.32/x
  3. Step 3: Cross multiply
    14,311.34x = 21,473.16 × 6,921.32
  4. Step 4: Simplify right side
    14,311.34x = 148,622,611.77
  5. Step 5: Solve for x
    x = 148,622,611.77/14,311.34
  6. Step 6: Final answer
    x = 10,384.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.