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Finding the Fourth Proportional to 27,645, 38,163.72 and 19,153.56

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Solution

The fourth proportional to 27,645, 38,163.72 and 19,153.56 is: 26,441.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,645 : 38,163.72 = 19,153.56 : x
  2. Step 2: Convert to fraction form
    27,645/38,163.72 = 19,153.56/x
  3. Step 3: Cross multiply
    27,645x = 38,163.72 × 19,153.56
  4. Step 4: Simplify right side
    27,645x = 730,971,100.84
  5. Step 5: Solve for x
    x = 730,971,100.84/27,645
  6. Step 6: Final answer
    x = 26,441.35

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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.