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Finding the Fourth Proportional to 22,611.25, 31,203.53 and 12,675.25

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Solution

The fourth proportional to 22,611.25, 31,203.53 and 12,675.25 is: 17,491.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,611.25 : 31,203.53 = 12,675.25 : x
  2. Step 2: Convert to fraction form
    22,611.25/31,203.53 = 12,675.25/x
  3. Step 3: Cross multiply
    22,611.25x = 31,203.53 × 12,675.25
  4. Step 4: Simplify right side
    22,611.25x = 395,512,543.63
  5. Step 5: Solve for x
    x = 395,512,543.63/22,611.25
  6. Step 6: Final answer
    x = 17,491.85

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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.