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Finding the Fourth Proportional to 547,783.10, 821,674.65 and 173,843.90

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Solution

The fourth proportional to 547,783.10, 821,674.65 and 173,843.90 is: 260,765.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,783.10 : 821,674.65 = 173,843.90 : x
  2. Step 2: Convert to fraction form
    547,783.10/821,674.65 = 173,843.90/x
  3. Step 3: Cross multiply
    547,783.10x = 821,674.65 × 173,843.90
  4. Step 4: Simplify right side
    547,783.10x = 142,843,125,687.14
  5. Step 5: Solve for x
    x = 142,843,125,687.14/547,783.10
  6. Step 6: Final answer
    x = 260,765.85

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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.