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Finding the Fourth Proportional to 22,374.74, 30,879.11 and 12,304.96

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Solution

The fourth proportional to 22,374.74, 30,879.11 and 12,304.96 is: 16,981.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,374.74 : 30,879.11 = 12,304.96 : x
  2. Step 2: Convert to fraction form
    22,374.74/30,879.11 = 12,304.96/x
  3. Step 3: Cross multiply
    22,374.74x = 30,879.11 × 12,304.96
  4. Step 4: Simplify right side
    22,374.74x = 379,966,166.95
  5. Step 5: Solve for x
    x = 379,966,166.95/22,374.74
  6. Step 6: Final answer
    x = 16,981.92

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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.