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Finding the Fourth Proportional to 28,175.88, 38,883.93 and 15,600.63

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Solution

The fourth proportional to 28,175.88, 38,883.93 and 15,600.63 is: 21,529.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,175.88 : 38,883.93 = 15,600.63 : x
  2. Step 2: Convert to fraction form
    28,175.88/38,883.93 = 15,600.63/x
  3. Step 3: Cross multiply
    28,175.88x = 38,883.93 × 15,600.63
  4. Step 4: Simplify right side
    28,175.88x = 606,613,532.45
  5. Step 5: Solve for x
    x = 606,613,532.45/28,175.88
  6. Step 6: Final answer
    x = 21,529.54

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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.