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Finding the Fourth Proportional to 192,009.90, 264,988.56 and 105,985.74

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Solution

The fourth proportional to 192,009.90, 264,988.56 and 105,985.74 is: 146,268.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,009.90 : 264,988.56 = 105,985.74 : x
  2. Step 2: Convert to fraction form
    192,009.90/264,988.56 = 105,985.74/x
  3. Step 3: Cross multiply
    192,009.90x = 264,988.56 × 105,985.74
  4. Step 4: Simplify right side
    192,009.90x = 28,085,008,623.13
  5. Step 5: Solve for x
    x = 28,085,008,623.13/192,009.90
  6. Step 6: Final answer
    x = 146,268.54

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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.