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Finding the Fourth Proportional to 185,912.69, 256,558.82 and 105,355.56

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Solution

The fourth proportional to 185,912.69, 256,558.82 and 105,355.56 is: 145,390.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,912.69 : 256,558.82 = 105,355.56 : x
  2. Step 2: Convert to fraction form
    185,912.69/256,558.82 = 105,355.56/x
  3. Step 3: Cross multiply
    185,912.69x = 256,558.82 × 105,355.56
  4. Step 4: Simplify right side
    185,912.69x = 27,029,898,154.04
  5. Step 5: Solve for x
    x = 27,029,898,154.04/185,912.69
  6. Step 6: Final answer
    x = 145,390.28

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1.5x scale

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.