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Finding the Fourth Proportional to 665,999.20, 998,998.80 and 589,016.80

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Solution

The fourth proportional to 665,999.20, 998,998.80 and 589,016.80 is: 883,525.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,999.20 : 998,998.80 = 589,016.80 : x
  2. Step 2: Convert to fraction form
    665,999.20/998,998.80 = 589,016.80/x
  3. Step 3: Cross multiply
    665,999.20x = 998,998.80 × 589,016.80
  4. Step 4: Simplify right side
    665,999.20x = 588,427,076,379.84
  5. Step 5: Solve for x
    x = 588,427,076,379.84/665,999.20
  6. Step 6: Final answer
    x = 883,525.20

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Half scale
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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.