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Finding the Fourth Proportional to 119,653.97, 165,123.56 and 65,940.91

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Solution

The fourth proportional to 119,653.97, 165,123.56 and 65,940.91 is: 90,999.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,653.97 : 165,123.56 = 65,940.91 : x
  2. Step 2: Convert to fraction form
    119,653.97/165,123.56 = 65,940.91/x
  3. Step 3: Cross multiply
    119,653.97x = 165,123.56 × 65,940.91
  4. Step 4: Simplify right side
    119,653.97x = 10,888,397,560.88
  5. Step 5: Solve for x
    x = 10,888,397,560.88/119,653.97
  6. Step 6: Final answer
    x = 90,999.05

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1.5x scale

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.