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Finding the Fourth Proportional to 644,539.12, 966,808.96 and 245,087.60

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Solution

The fourth proportional to 644,539.12, 966,808.96 and 245,087.60 is: 367,631.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,539.12 : 966,808.96 = 245,087.60 : x
  2. Step 2: Convert to fraction form
    644,539.12/966,808.96 = 245,087.60/x
  3. Step 3: Cross multiply
    644,539.12x = 966,808.96 × 245,087.60
  4. Step 4: Simplify right side
    644,539.12x = 236,952,887,664.90
  5. Step 5: Solve for x
    x = 236,952,887,664.90/644,539.12
  6. Step 6: Final answer
    x = 367,631.51

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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.