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Finding the Fourth Proportional to 411,399.60, 617,099.40 and 253,114.80

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Solution

The fourth proportional to 411,399.60, 617,099.40 and 253,114.80 is: 379,672.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,399.60 : 617,099.40 = 253,114.80 : x
  2. Step 2: Convert to fraction form
    411,399.60/617,099.40 = 253,114.80/x
  3. Step 3: Cross multiply
    411,399.60x = 617,099.40 × 253,114.80
  4. Step 4: Simplify right side
    411,399.60x = 156,196,991,211.12
  5. Step 5: Solve for x
    x = 156,196,991,211.12/411,399.60
  6. Step 6: Final answer
    x = 379,672.20

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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.