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Finding the Fourth Proportional to 657,633.20, 986,449.80 and 445,056.80

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Solution

The fourth proportional to 657,633.20, 986,449.80 and 445,056.80 is: 667,585.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,633.20 : 986,449.80 = 445,056.80 : x
  2. Step 2: Convert to fraction form
    657,633.20/986,449.80 = 445,056.80/x
  3. Step 3: Cross multiply
    657,633.20x = 986,449.80 × 445,056.80
  4. Step 4: Simplify right side
    657,633.20x = 439,026,191,348.64
  5. Step 5: Solve for x
    x = 439,026,191,348.64/657,633.20
  6. Step 6: Final answer
    x = 667,585.20

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Similar ratio
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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.