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Finding the Fourth Proportional to 365,813.70, 548,720.55 and 155,424.30

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Solution

The fourth proportional to 365,813.70, 548,720.55 and 155,424.30 is: 233,136.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,813.70 : 548,720.55 = 155,424.30 : x
  2. Step 2: Convert to fraction form
    365,813.70/548,720.55 = 155,424.30/x
  3. Step 3: Cross multiply
    365,813.70x = 548,720.55 × 155,424.30
  4. Step 4: Simplify right side
    365,813.70x = 85,284,507,379.37
  5. Step 5: Solve for x
    x = 85,284,507,379.37/365,813.70
  6. Step 6: Final answer
    x = 233,136.45

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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.