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Finding the Fourth Proportional to 192,390.62, 265,499.93 and 105,177.51

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Solution

The fourth proportional to 192,390.62, 265,499.93 and 105,177.51 is: 145,145.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,390.62 : 265,499.93 = 105,177.51 : x
  2. Step 2: Convert to fraction form
    192,390.62/265,499.93 = 105,177.51/x
  3. Step 3: Cross multiply
    192,390.62x = 265,499.93 × 105,177.51
  4. Step 4: Simplify right side
    192,390.62x = 27,924,621,016.69
  5. Step 5: Solve for x
    x = 27,924,621,016.69/192,390.62
  6. Step 6: Final answer
    x = 145,145.44

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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.