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Finding the Fourth Proportional to 28,893.60, 39,846.48 and 22,179.51

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Solution

The fourth proportional to 28,893.60, 39,846.48 and 22,179.51 is: 30,587.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,893.60 : 39,846.48 = 22,179.51 : x
  2. Step 2: Convert to fraction form
    28,893.60/39,846.48 = 22,179.51/x
  3. Step 3: Cross multiply
    28,893.60x = 39,846.48 × 22,179.51
  4. Step 4: Simplify right side
    28,893.60x = 883,775,401.62
  5. Step 5: Solve for x
    x = 883,775,401.62/28,893.60
  6. Step 6: Final answer
    x = 30,587.24

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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.