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Finding the Fourth Proportional to 18,759.25, 25,888.25 and 11,307.73

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Solution

The fourth proportional to 18,759.25, 25,888.25 and 11,307.73 is: 15,604.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,759.25 : 25,888.25 = 11,307.73 : x
  2. Step 2: Convert to fraction form
    18,759.25/25,888.25 = 11,307.73/x
  3. Step 3: Cross multiply
    18,759.25x = 25,888.25 × 11,307.73
  4. Step 4: Simplify right side
    18,759.25x = 292,737,341.17
  5. Step 5: Solve for x
    x = 292,737,341.17/18,759.25
  6. Step 6: Final answer
    x = 15,604.96

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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.