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Finding the Fourth Proportional to 665,636.80, 998,455.20 and 245,076.70

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Solution

The fourth proportional to 665,636.80, 998,455.20 and 245,076.70 is: 367,615.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,636.80 : 998,455.20 = 245,076.70 : x
  2. Step 2: Convert to fraction form
    665,636.80/998,455.20 = 245,076.70/x
  3. Step 3: Cross multiply
    665,636.80x = 998,455.20 × 245,076.70
  4. Step 4: Simplify right side
    665,636.80x = 244,698,105,513.84
  5. Step 5: Solve for x
    x = 244,698,105,513.84/665,636.80
  6. Step 6: Final answer
    x = 367,615.05

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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.