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Finding the Fourth Proportional to 185,608.80, 256,140 and 105,034.86

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Solution

The fourth proportional to 185,608.80, 256,140 and 105,034.86 is: 144,948.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,608.80 : 256,140 = 105,034.86 : x
  2. Step 2: Convert to fraction form
    185,608.80/256,140 = 105,034.86/x
  3. Step 3: Cross multiply
    185,608.80x = 256,140 × 105,034.86
  4. Step 4: Simplify right side
    185,608.80x = 26,903,629,040.40
  5. Step 5: Solve for x
    x = 26,903,629,040.40/185,608.80
  6. Step 6: Final answer
    x = 144,948.03

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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.