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Finding the Fourth Proportional to 384,115.80, 575,136.90 and 384,115.80

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Solution

The fourth proportional to 384,115.80, 575,136.90 and 384,115.80 is: 575,136.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,115.80 : 575,136.90 = 384,115.80 : x
  2. Step 2: Convert to fraction form
    384,115.80/575,136.90 = 384,115.80/x
  3. Step 3: Cross multiply
    384,115.80x = 575,136.90 × 384,115.80
  4. Step 4: Simplify right side
    384,115.80x = 220,919,170,453.02
  5. Step 5: Solve for x
    x = 220,919,170,453.02/384,115.80
  6. Step 6: Final answer
    x = 575,136.90

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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.