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Finding the Fourth Proportional to 119,087.49, 164,340.09 and 65,373.42

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Solution

The fourth proportional to 119,087.49, 164,340.09 and 65,373.42 is: 90,214.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,087.49 : 164,340.09 = 65,373.42 : x
  2. Step 2: Convert to fraction form
    119,087.49/164,340.09 = 65,373.42/x
  3. Step 3: Cross multiply
    119,087.49x = 164,340.09 × 65,373.42
  4. Step 4: Simplify right side
    119,087.49x = 10,743,473,726.41
  5. Step 5: Solve for x
    x = 10,743,473,726.41/119,087.49
  6. Step 6: Final answer
    x = 90,214.96

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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.