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Finding the Fourth Proportional to 119,992.68, 165,585.60 and 66,274.92

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Solution

The fourth proportional to 119,992.68, 165,585.60 and 66,274.92 is: 91,457.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,992.68 : 165,585.60 = 66,274.92 : x
  2. Step 2: Convert to fraction form
    119,992.68/165,585.60 = 66,274.92/x
  3. Step 3: Cross multiply
    119,992.68x = 165,585.60 × 66,274.92
  4. Step 4: Simplify right side
    119,992.68x = 10,974,172,393.15
  5. Step 5: Solve for x
    x = 10,974,172,393.15/119,992.68
  6. Step 6: Final answer
    x = 91,457.02

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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.