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Finding the Fourth Proportional to 402,211.80, 603,317.70 and 267,492.60

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Solution

The fourth proportional to 402,211.80, 603,317.70 and 267,492.60 is: 401,238.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,211.80 : 603,317.70 = 267,492.60 : x
  2. Step 2: Convert to fraction form
    402,211.80/603,317.70 = 267,492.60/x
  3. Step 3: Cross multiply
    402,211.80x = 603,317.70 × 267,492.60
  4. Step 4: Simplify right side
    402,211.80x = 161,383,020,199.02
  5. Step 5: Solve for x
    x = 161,383,020,199.02/402,211.80
  6. Step 6: Final answer
    x = 401,238.90

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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.