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Finding the Fourth Proportional to 21,995.65, 32,974.94 and 14,955.94

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Solution

The fourth proportional to 21,995.65, 32,974.94 and 14,955.94 is: 22,421.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,995.65 : 32,974.94 = 14,955.94 : x
  2. Step 2: Convert to fraction form
    21,995.65/32,974.94 = 14,955.94/x
  3. Step 3: Cross multiply
    21,995.65x = 32,974.94 × 14,955.94
  4. Step 4: Simplify right side
    21,995.65x = 493,171,059.27
  5. Step 5: Solve for x
    x = 493,171,059.27/21,995.65
  6. Step 6: Final answer
    x = 22,421.30

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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.