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Finding the Fourth Proportional to 15,172.88, 22,763.16 and 4,228.88

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Solution

The fourth proportional to 15,172.88, 22,763.16 and 4,228.88 is: 6,344.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,172.88 : 22,763.16 = 4,228.88 : x
  2. Step 2: Convert to fraction form
    15,172.88/22,763.16 = 4,228.88/x
  3. Step 3: Cross multiply
    15,172.88x = 22,763.16 × 4,228.88
  4. Step 4: Simplify right side
    15,172.88x = 96,262,672.06
  5. Step 5: Solve for x
    x = 96,262,672.06/15,172.88
  6. Step 6: Final answer
    x = 6,344.39

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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.