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Finding the Fourth Proportional to 192,655.37, 265,852.17 and 105,422.78

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Solution

The fourth proportional to 192,655.37, 265,852.17 and 105,422.78 is: 145,476.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,655.37 : 265,852.17 = 105,422.78 : x
  2. Step 2: Convert to fraction form
    192,655.37/265,852.17 = 105,422.78/x
  3. Step 3: Cross multiply
    192,655.37x = 265,852.17 × 105,422.78
  4. Step 4: Simplify right side
    192,655.37x = 28,026,873,501.17
  5. Step 5: Solve for x
    x = 28,026,873,501.17/192,655.37
  6. Step 6: Final answer
    x = 145,476.74

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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.