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Finding the Fourth Proportional to 110,651.80, 165,733.86 and 91,458.52

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Solution

The fourth proportional to 110,651.80, 165,733.86 and 91,458.52 is: 136,986.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,651.80 : 165,733.86 = 91,458.52 : x
  2. Step 2: Convert to fraction form
    110,651.80/165,733.86 = 91,458.52/x
  3. Step 3: Cross multiply
    110,651.80x = 165,733.86 × 91,458.52
  4. Step 4: Simplify right side
    110,651.80x = 15,157,773,549.49
  5. Step 5: Solve for x
    x = 15,157,773,549.49/110,651.80
  6. Step 6: Final answer
    x = 136,986.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.