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Finding the Fourth Proportional to 21,525.69, 29,702.16 and 12,092.43

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Solution

The fourth proportional to 21,525.69, 29,702.16 and 12,092.43 is: 16,685.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,525.69 : 29,702.16 = 12,092.43 : x
  2. Step 2: Convert to fraction form
    21,525.69/29,702.16 = 12,092.43/x
  3. Step 3: Cross multiply
    21,525.69x = 29,702.16 × 12,092.43
  4. Step 4: Simplify right side
    21,525.69x = 359,171,290.65
  5. Step 5: Solve for x
    x = 359,171,290.65/21,525.69
  6. Step 6: Final answer
    x = 16,685.70

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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.