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Finding the Fourth Proportional to 110,129.61, 165,187.73 and 39,055.77

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Solution

The fourth proportional to 110,129.61, 165,187.73 and 39,055.77 is: 58,581.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,129.61 : 165,187.73 = 39,055.77 : x
  2. Step 2: Convert to fraction form
    110,129.61/165,187.73 = 39,055.77/x
  3. Step 3: Cross multiply
    110,129.61x = 165,187.73 × 39,055.77
  4. Step 4: Simplify right side
    110,129.61x = 6,451,533,794.42
  5. Step 5: Solve for x
    x = 6,451,533,794.42/110,129.61
  6. Step 6: Final answer
    x = 58,581.28

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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.