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Finding the Fourth Proportional to 579,741.20, 869,611.80 and 367,164.80

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Solution

The fourth proportional to 579,741.20, 869,611.80 and 367,164.80 is: 550,747.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,741.20 : 869,611.80 = 367,164.80 : x
  2. Step 2: Convert to fraction form
    579,741.20/869,611.80 = 367,164.80/x
  3. Step 3: Cross multiply
    579,741.20x = 869,611.80 × 367,164.80
  4. Step 4: Simplify right side
    579,741.20x = 319,290,842,624.64
  5. Step 5: Solve for x
    x = 319,290,842,624.64/579,741.20
  6. Step 6: Final answer
    x = 550,747.20

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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.