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Finding the Fourth Proportional to 644,536.80, 966,805.20 and 617,234.40

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Solution

The fourth proportional to 644,536.80, 966,805.20 and 617,234.40 is: 925,851.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,536.80 : 966,805.20 = 617,234.40 : x
  2. Step 2: Convert to fraction form
    644,536.80/966,805.20 = 617,234.40/x
  3. Step 3: Cross multiply
    644,536.80x = 966,805.20 × 617,234.40
  4. Step 4: Simplify right side
    644,536.80x = 596,745,427,538.88
  5. Step 5: Solve for x
    x = 596,745,427,538.88/644,536.80
  6. Step 6: Final answer
    x = 925,851.60

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Double scale
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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.