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Finding the Fourth Proportional to 14,063.46, 19,406.94 and 7,689.96

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Solution

The fourth proportional to 14,063.46, 19,406.94 and 7,689.96 is: 10,611.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,063.46 : 19,406.94 = 7,689.96 : x
  2. Step 2: Convert to fraction form
    14,063.46/19,406.94 = 7,689.96/x
  3. Step 3: Cross multiply
    14,063.46x = 19,406.94 × 7,689.96
  4. Step 4: Simplify right side
    14,063.46x = 149,238,592.32
  5. Step 5: Solve for x
    x = 149,238,592.32/14,063.46
  6. Step 6: Final answer
    x = 10,611.80

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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.