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Finding the Fourth Proportional to 170,741.80, 256,112.70 and 92,009.80

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Solution

The fourth proportional to 170,741.80, 256,112.70 and 92,009.80 is: 138,014.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,741.80 : 256,112.70 = 92,009.80 : x
  2. Step 2: Convert to fraction form
    170,741.80/256,112.70 = 92,009.80/x
  3. Step 3: Cross multiply
    170,741.80x = 256,112.70 × 92,009.80
  4. Step 4: Simplify right side
    170,741.80x = 23,564,878,304.46
  5. Step 5: Solve for x
    x = 23,564,878,304.46/170,741.80
  6. Step 6: Final answer
    x = 138,014.70

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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.