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Finding the Fourth Proportional to 22,894.66, 31,612.88 and 15,245.40

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Solution

The fourth proportional to 22,894.66, 31,612.88 and 15,245.40 is: 21,050.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,894.66 : 31,612.88 = 15,245.40 : x
  2. Step 2: Convert to fraction form
    22,894.66/31,612.88 = 15,245.40/x
  3. Step 3: Cross multiply
    22,894.66x = 31,612.88 × 15,245.40
  4. Step 4: Simplify right side
    22,894.66x = 481,951,000.75
  5. Step 5: Solve for x
    x = 481,951,000.75/22,894.66
  6. Step 6: Final answer
    x = 21,050.80

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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.