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Finding the Fourth Proportional to 169,884.51, 255,023.62 and 91,152.51

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Solution

The fourth proportional to 169,884.51, 255,023.62 and 91,152.51 is: 136,834.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,884.51 : 255,023.62 = 91,152.51 : x
  2. Step 2: Convert to fraction form
    169,884.51/255,023.62 = 91,152.51/x
  3. Step 3: Cross multiply
    169,884.51x = 255,023.62 × 91,152.51
  4. Step 4: Simplify right side
    169,884.51x = 23,246,042,844.40
  5. Step 5: Solve for x
    x = 23,246,042,844.40/169,884.51
  6. Step 6: Final answer
    x = 136,834.39

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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.