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Finding the Fourth Proportional to 663,137.80, 995,000.72 and 347,519.68

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Solution

The fourth proportional to 663,137.80, 995,000.72 and 347,519.68 is: 521,433.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,137.80 : 995,000.72 = 347,519.68 : x
  2. Step 2: Convert to fraction form
    663,137.80/995,000.72 = 347,519.68/x
  3. Step 3: Cross multiply
    663,137.80x = 995,000.72 × 347,519.68
  4. Step 4: Simplify right side
    663,137.80x = 345,782,331,814.17
  5. Step 5: Solve for x
    x = 345,782,331,814.17/663,137.80
  6. Step 6: Final answer
    x = 521,433.60

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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.