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Finding the Fourth Proportional to 569,764.80, 854,647.20 and 289,828.80

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Solution

The fourth proportional to 569,764.80, 854,647.20 and 289,828.80 is: 434,743.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,764.80 : 854,647.20 = 289,828.80 : x
  2. Step 2: Convert to fraction form
    569,764.80/854,647.20 = 289,828.80/x
  3. Step 3: Cross multiply
    569,764.80x = 854,647.20 × 289,828.80
  4. Step 4: Simplify right side
    569,764.80x = 247,701,372,399.36
  5. Step 5: Solve for x
    x = 247,701,372,399.36/569,764.80
  6. Step 6: Final answer
    x = 434,743.20

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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.