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Finding the Fourth Proportional to 15,662.25, 21,611.25 and 10,354.23

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Solution

The fourth proportional to 15,662.25, 21,611.25 and 10,354.23 is: 14,287.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,662.25 : 21,611.25 = 10,354.23 : x
  2. Step 2: Convert to fraction form
    15,662.25/21,611.25 = 10,354.23/x
  3. Step 3: Cross multiply
    15,662.25x = 21,611.25 × 10,354.23
  4. Step 4: Simplify right side
    15,662.25x = 223,767,853.09
  5. Step 5: Solve for x
    x = 223,767,853.09/15,662.25
  6. Step 6: Final answer
    x = 14,287.08

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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.