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Finding the Fourth Proportional to 186,665.79, 257,620.98 and 117,855.21

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Solution

The fourth proportional to 186,665.79, 257,620.98 and 117,855.21 is: 162,654.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,665.79 : 257,620.98 = 117,855.21 : x
  2. Step 2: Convert to fraction form
    186,665.79/257,620.98 = 117,855.21/x
  3. Step 3: Cross multiply
    186,665.79x = 257,620.98 × 117,855.21
  4. Step 4: Simplify right side
    186,665.79x = 30,361,974,698.31
  5. Step 5: Solve for x
    x = 30,361,974,698.31/186,665.79
  6. Step 6: Final answer
    x = 162,654.20

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.