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Finding the Fourth Proportional to 661,692.11, 992,003.81 and 256,675.21

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Solution

The fourth proportional to 661,692.11, 992,003.81 and 256,675.21 is: 384,805.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,692.11 : 992,003.81 = 256,675.21 : x
  2. Step 2: Convert to fraction form
    661,692.11/992,003.81 = 256,675.21/x
  3. Step 3: Cross multiply
    661,692.11x = 992,003.81 × 256,675.21
  4. Step 4: Simplify right side
    661,692.11x = 254,622,786,252.55
  5. Step 5: Solve for x
    x = 254,622,786,252.55/661,692.11
  6. Step 6: Final answer
    x = 384,805.53

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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.