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Finding the Fourth Proportional to 644,530.80, 966,796.20 and 617,228.40

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Solution

The fourth proportional to 644,530.80, 966,796.20 and 617,228.40 is: 925,842.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,530.80 : 966,796.20 = 617,228.40 : x
  2. Step 2: Convert to fraction form
    644,530.80/966,796.20 = 617,228.40/x
  3. Step 3: Cross multiply
    644,530.80x = 966,796.20 × 617,228.40
  4. Step 4: Simplify right side
    644,530.80x = 596,734,071,652.08
  5. Step 5: Solve for x
    x = 596,734,071,652.08/644,530.80
  6. Step 6: Final answer
    x = 925,842.60

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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.