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Finding the Fourth Proportional to 664,048.20, 996,072.30 and 165,412.20

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Solution

The fourth proportional to 664,048.20, 996,072.30 and 165,412.20 is: 248,118.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,048.20 : 996,072.30 = 165,412.20 : x
  2. Step 2: Convert to fraction form
    664,048.20/996,072.30 = 165,412.20/x
  3. Step 3: Cross multiply
    664,048.20x = 996,072.30 × 165,412.20
  4. Step 4: Simplify right side
    664,048.20x = 164,762,510,502.06
  5. Step 5: Solve for x
    x = 164,762,510,502.06/664,048.20
  6. Step 6: Final answer
    x = 248,118.30

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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.