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Finding the Fourth Proportional to 20,577.33, 30,865.98 and 4,994.94

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Solution

The fourth proportional to 20,577.33, 30,865.98 and 4,994.94 is: 7,492.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,577.33 : 30,865.98 = 4,994.94 : x
  2. Step 2: Convert to fraction form
    20,577.33/30,865.98 = 4,994.94/x
  3. Step 3: Cross multiply
    20,577.33x = 30,865.98 × 4,994.94
  4. Step 4: Simplify right side
    20,577.33x = 154,173,718.14
  5. Step 5: Solve for x
    x = 154,173,718.14/20,577.33
  6. Step 6: Final answer
    x = 7,492.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.