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Finding the Fourth Proportional to 255,356.01, 383,173.34 and 105,609.29

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Solution

The fourth proportional to 255,356.01, 383,173.34 and 105,609.29 is: 158,471.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,356.01 : 383,173.34 = 105,609.29 : x
  2. Step 2: Convert to fraction form
    255,356.01/383,173.34 = 105,609.29/x
  3. Step 3: Cross multiply
    255,356.01x = 383,173.34 × 105,609.29
  4. Step 4: Simplify right side
    255,356.01x = 40,466,661,940.42
  5. Step 5: Solve for x
    x = 40,466,661,940.42/255,356.01
  6. Step 6: Final answer
    x = 158,471.55

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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.