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Finding the Fourth Proportional to 22,990.43, 34,498.74 and 8,948.64

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Solution

The fourth proportional to 22,990.43, 34,498.74 and 8,948.64 is: 13,428.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,990.43 : 34,498.74 = 8,948.64 : x
  2. Step 2: Convert to fraction form
    22,990.43/34,498.74 = 8,948.64/x
  3. Step 3: Cross multiply
    22,990.43x = 34,498.74 × 8,948.64
  4. Step 4: Simplify right side
    22,990.43x = 308,716,804.71
  5. Step 5: Solve for x
    x = 308,716,804.71/22,990.43
  6. Step 6: Final answer
    x = 13,428.06

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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.