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Finding the Fourth Proportional to 120,058.68, 165,676.52 and 66,342.58

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Solution

The fourth proportional to 120,058.68, 165,676.52 and 66,342.58 is: 91,550.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,058.68 : 165,676.52 = 66,342.58 : x
  2. Step 2: Convert to fraction form
    120,058.68/165,676.52 = 66,342.58/x
  3. Step 3: Cross multiply
    120,058.68x = 165,676.52 × 66,342.58
  4. Step 4: Simplify right side
    120,058.68x = 10,991,407,782.22
  5. Step 5: Solve for x
    x = 10,991,407,782.22/120,058.68
  6. Step 6: Final answer
    x = 91,550.30

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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.