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Finding the Fourth Proportional to 190,806.58, 263,299.88 and 105,916.96

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Solution

The fourth proportional to 190,806.58, 263,299.88 and 105,916.96 is: 146,158.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,806.58 : 263,299.88 = 105,916.96 : x
  2. Step 2: Convert to fraction form
    190,806.58/263,299.88 = 105,916.96/x
  3. Step 3: Cross multiply
    190,806.58x = 263,299.88 × 105,916.96
  4. Step 4: Simplify right side
    190,806.58x = 27,887,922,857.96
  5. Step 5: Solve for x
    x = 27,887,922,857.96/190,806.58
  6. Step 6: Final answer
    x = 146,158.08

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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.