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Finding the Fourth Proportional to 664,052.20, 996,078.30 and 165,416.20

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Solution

The fourth proportional to 664,052.20, 996,078.30 and 165,416.20 is: 248,124.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,052.20 : 996,078.30 = 165,416.20 : x
  2. Step 2: Convert to fraction form
    664,052.20/996,078.30 = 165,416.20/x
  3. Step 3: Cross multiply
    664,052.20x = 996,078.30 × 165,416.20
  4. Step 4: Simplify right side
    664,052.20x = 164,767,487,288.46
  5. Step 5: Solve for x
    x = 164,767,487,288.46/664,052.20
  6. Step 6: Final answer
    x = 248,124.30

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Double scale
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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.