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Finding the Fourth Proportional to 21,676.34, 29,927.13 and 16,630.99

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Solution

The fourth proportional to 21,676.34, 29,927.13 and 16,630.99 is: 22,961.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,676.34 : 29,927.13 = 16,630.99 : x
  2. Step 2: Convert to fraction form
    21,676.34/29,927.13 = 16,630.99/x
  3. Step 3: Cross multiply
    21,676.34x = 29,927.13 × 16,630.99
  4. Step 4: Simplify right side
    21,676.34x = 497,717,799.76
  5. Step 5: Solve for x
    x = 497,717,799.76/21,676.34
  6. Step 6: Final answer
    x = 22,961.34

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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.