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Finding the Fourth Proportional to 192,671.45, 265,882.36 and 105,456.12

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Solution

The fourth proportional to 192,671.45, 265,882.36 and 105,456.12 is: 145,527.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,671.45 : 265,882.36 = 105,456.12 : x
  2. Step 2: Convert to fraction form
    192,671.45/265,882.36 = 105,456.12/x
  3. Step 3: Cross multiply
    192,671.45x = 265,882.36 × 105,456.12
  4. Step 4: Simplify right side
    192,671.45x = 28,038,922,062.04
  5. Step 5: Solve for x
    x = 28,038,922,062.04/192,671.45
  6. Step 6: Final answer
    x = 145,527.12

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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.