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Finding the Fourth Proportional to 119,561.43, 164,988.37 and 65,835.96

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Solution

The fourth proportional to 119,561.43, 164,988.37 and 65,835.96 is: 90,850.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,561.43 : 164,988.37 = 65,835.96 : x
  2. Step 2: Convert to fraction form
    119,561.43/164,988.37 = 65,835.96/x
  3. Step 3: Cross multiply
    119,561.43x = 164,988.37 × 65,835.96
  4. Step 4: Simplify right side
    119,561.43x = 10,862,167,727.79
  5. Step 5: Solve for x
    x = 10,862,167,727.79/119,561.43
  6. Step 6: Final answer
    x = 90,850.10

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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.