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Finding the Fourth Proportional to 20,893.76, 28,837.98 and 14,442.44

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Solution

The fourth proportional to 20,893.76, 28,837.98 and 14,442.44 is: 19,933.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,893.76 : 28,837.98 = 14,442.44 : x
  2. Step 2: Convert to fraction form
    20,893.76/28,837.98 = 14,442.44/x
  3. Step 3: Cross multiply
    20,893.76x = 28,837.98 × 14,442.44
  4. Step 4: Simplify right side
    20,893.76x = 416,490,795.87
  5. Step 5: Solve for x
    x = 416,490,795.87/20,893.76
  6. Step 6: Final answer
    x = 19,933.74

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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.