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Finding the Fourth Proportional to 665,016.30, 997,524.45 and 399,077.10

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Solution

The fourth proportional to 665,016.30, 997,524.45 and 399,077.10 is: 598,615.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,016.30 : 997,524.45 = 399,077.10 : x
  2. Step 2: Convert to fraction form
    665,016.30/997,524.45 = 399,077.10/x
  3. Step 3: Cross multiply
    665,016.30x = 997,524.45 × 399,077.10
  4. Step 4: Simplify right side
    665,016.30x = 398,089,164,685.10
  5. Step 5: Solve for x
    x = 398,089,164,685.10/665,016.30
  6. Step 6: Final answer
    x = 598,615.65

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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.