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Finding the Fourth Proportional to 119,574.78, 165,013.11 and 65,858.46

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Solution

The fourth proportional to 119,574.78, 165,013.11 and 65,858.46 is: 90,884.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,574.78 : 165,013.11 = 65,858.46 : x
  2. Step 2: Convert to fraction form
    119,574.78/165,013.11 = 65,858.46/x
  3. Step 3: Cross multiply
    119,574.78x = 165,013.11 × 65,858.46
  4. Step 4: Simplify right side
    119,574.78x = 10,867,509,304.41
  5. Step 5: Solve for x
    x = 10,867,509,304.41/119,574.78
  6. Step 6: Final answer
    x = 90,884.63

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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.