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Finding the Fourth Proportional to 119,763.45, 165,270.02 and 66,048.45

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Solution

The fourth proportional to 119,763.45, 165,270.02 and 66,048.45 is: 91,144.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,763.45 : 165,270.02 = 66,048.45 : x
  2. Step 2: Convert to fraction form
    119,763.45/165,270.02 = 66,048.45/x
  3. Step 3: Cross multiply
    119,763.45x = 165,270.02 × 66,048.45
  4. Step 4: Simplify right side
    119,763.45x = 10,915,828,322.23
  5. Step 5: Solve for x
    x = 10,915,828,322.23/119,763.45
  6. Step 6: Final answer
    x = 91,144.91

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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.