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Finding the Fourth Proportional to 545,215.20, 817,822.80 and 171,237.60

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Solution

The fourth proportional to 545,215.20, 817,822.80 and 171,237.60 is: 256,856.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,215.20 : 817,822.80 = 171,237.60 : x
  2. Step 2: Convert to fraction form
    545,215.20/817,822.80 = 171,237.60/x
  3. Step 3: Cross multiply
    545,215.20x = 817,822.80 × 171,237.60
  4. Step 4: Simplify right side
    545,215.20x = 140,042,013,497.28
  5. Step 5: Solve for x
    x = 140,042,013,497.28/545,215.20
  6. Step 6: Final answer
    x = 256,856.40

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Similar ratio
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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.