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Finding the Fourth Proportional to 661,692.60, 993,523.05 and 512,101.80

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Solution

The fourth proportional to 661,692.60, 993,523.05 and 512,101.80 is: 768,914.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,692.60 : 993,523.05 = 512,101.80 : x
  2. Step 2: Convert to fraction form
    661,692.60/993,523.05 = 512,101.80/x
  3. Step 3: Cross multiply
    661,692.60x = 993,523.05 × 512,101.80
  4. Step 4: Simplify right side
    661,692.60x = 508,784,942,246.49
  5. Step 5: Solve for x
    x = 508,784,942,246.49/661,692.60
  6. Step 6: Final answer
    x = 768,914.36

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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.