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Finding the Fourth Proportional to 22,990.95, 34,479.95 and 9,857.61

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Solution

The fourth proportional to 22,990.95, 34,479.95 and 9,857.61 is: 14,783.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,990.95 : 34,479.95 = 9,857.61 : x
  2. Step 2: Convert to fraction form
    22,990.95/34,479.95 = 9,857.61/x
  3. Step 3: Cross multiply
    22,990.95x = 34,479.95 × 9,857.61
  4. Step 4: Simplify right side
    22,990.95x = 339,889,850.63
  5. Step 5: Solve for x
    x = 339,889,850.63/22,990.95
  6. Step 6: Final answer
    x = 14,783.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.