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Finding the Fourth Proportional to 21,497.70, 29,665.20 and 12,064.44

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Solution

The fourth proportional to 21,497.70, 29,665.20 and 12,064.44 is: 16,648.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,497.70 : 29,665.20 = 12,064.44 : x
  2. Step 2: Convert to fraction form
    21,497.70/29,665.20 = 12,064.44/x
  3. Step 3: Cross multiply
    21,497.70x = 29,665.20 × 12,064.44
  4. Step 4: Simplify right side
    21,497.70x = 357,893,965.17
  5. Step 5: Solve for x
    x = 357,893,965.17/21,497.70
  6. Step 6: Final answer
    x = 16,648.01

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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.