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Finding the Fourth Proportional to 20,508.84, 30,650.88 and 14,973.84

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Solution

The fourth proportional to 20,508.84, 30,650.88 and 14,973.84 is: 22,378.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,508.84 : 30,650.88 = 14,973.84 : x
  2. Step 2: Convert to fraction form
    20,508.84/30,650.88 = 14,973.84/x
  3. Step 3: Cross multiply
    20,508.84x = 30,650.88 × 14,973.84
  4. Step 4: Simplify right side
    20,508.84x = 458,961,372.98
  5. Step 5: Solve for x
    x = 458,961,372.98/20,508.84
  6. Step 6: Final answer
    x = 22,378.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.