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Finding the Fourth Proportional to 657,667.20, 986,500.80 and 445,090.80

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Solution

The fourth proportional to 657,667.20, 986,500.80 and 445,090.80 is: 667,636.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,667.20 : 986,500.80 = 445,090.80 : x
  2. Step 2: Convert to fraction form
    657,667.20/986,500.80 = 445,090.80/x
  3. Step 3: Cross multiply
    657,667.20x = 986,500.80 × 445,090.80
  4. Step 4: Simplify right side
    657,667.20x = 439,082,430,272.64
  5. Step 5: Solve for x
    x = 439,082,430,272.64/657,667.20
  6. Step 6: Final answer
    x = 667,636.20

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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.