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Finding the Fourth Proportional to 21,706.94, 32,415.42 and 18,554.02

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Solution

The fourth proportional to 21,706.94, 32,415.42 and 18,554.02 is: 27,707.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,706.94 : 32,415.42 = 18,554.02 : x
  2. Step 2: Convert to fraction form
    21,706.94/32,415.42 = 18,554.02/x
  3. Step 3: Cross multiply
    21,706.94x = 32,415.42 × 18,554.02
  4. Step 4: Simplify right side
    21,706.94x = 601,436,235.16
  5. Step 5: Solve for x
    x = 601,436,235.16/21,706.94
  6. Step 6: Final answer
    x = 27,707.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.