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Finding the Fourth Proportional to 545,231.28, 817,879.59 and 171,254.28

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Solution

The fourth proportional to 545,231.28, 817,879.59 and 171,254.28 is: 256,891.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,231.28 : 817,879.59 = 171,254.28 : x
  2. Step 2: Convert to fraction form
    545,231.28/817,879.59 = 171,254.28/x
  3. Step 3: Cross multiply
    545,231.28x = 817,879.59 × 171,254.28
  4. Step 4: Simplify right side
    545,231.28x = 140,065,380,312.15
  5. Step 5: Solve for x
    x = 140,065,380,312.15/545,231.28
  6. Step 6: Final answer
    x = 256,891.68

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1.5x scale

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.