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Finding the Fourth Proportional to 236,051.91, 325,751.67 and 128,621.97

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Solution

The fourth proportional to 236,051.91, 325,751.67 and 128,621.97 is: 177,498.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,051.91 : 325,751.67 = 128,621.97 : x
  2. Step 2: Convert to fraction form
    236,051.91/325,751.67 = 128,621.97/x
  3. Step 3: Cross multiply
    236,051.91x = 325,751.67 × 128,621.97
  4. Step 4: Simplify right side
    236,051.91x = 41,898,821,526.19
  5. Step 5: Solve for x
    x = 41,898,821,526.19/236,051.91
  6. Step 6: Final answer
    x = 177,498.34

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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.