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Finding the Fourth Proportional to 110,383.40, 165,575.10 and 98,978.60

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Solution

The fourth proportional to 110,383.40, 165,575.10 and 98,978.60 is: 148,467.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,383.40 : 165,575.10 = 98,978.60 : x
  2. Step 2: Convert to fraction form
    110,383.40/165,575.10 = 98,978.60/x
  3. Step 3: Cross multiply
    110,383.40x = 165,575.10 × 98,978.60
  4. Step 4: Simplify right side
    110,383.40x = 16,388,391,592.86
  5. Step 5: Solve for x
    x = 16,388,391,592.86/110,383.40
  6. Step 6: Final answer
    x = 148,467.90

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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.