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Finding the Fourth Proportional to 21,693.58, 29,934.70 and 12,262.14

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Solution

The fourth proportional to 21,693.58, 29,934.70 and 12,262.14 is: 16,920.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,693.58 : 29,934.70 = 12,262.14 : x
  2. Step 2: Convert to fraction form
    21,693.58/29,934.70 = 12,262.14/x
  3. Step 3: Cross multiply
    21,693.58x = 29,934.70 × 12,262.14
  4. Step 4: Simplify right side
    21,693.58x = 367,063,451.60
  5. Step 5: Solve for x
    x = 367,063,451.60/21,693.58
  6. Step 6: Final answer
    x = 16,920.37

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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.