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Finding the Fourth Proportional to 185,911.68, 256,557.44 and 105,354.54

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Solution

The fourth proportional to 185,911.68, 256,557.44 and 105,354.54 is: 145,388.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,911.68 : 256,557.44 = 105,354.54 : x
  2. Step 2: Convert to fraction form
    185,911.68/256,557.44 = 105,354.54/x
  3. Step 3: Cross multiply
    185,911.68x = 256,557.44 × 105,354.54
  4. Step 4: Simplify right side
    185,911.68x = 27,029,491,074.78
  5. Step 5: Solve for x
    x = 27,029,491,074.78/185,911.68
  6. Step 6: Final answer
    x = 145,388.88

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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.