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Finding the Fourth Proportional to 663,150.80, 994,726.20 and 411,208.40

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Solution

The fourth proportional to 663,150.80, 994,726.20 and 411,208.40 is: 616,812.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,150.80 : 994,726.20 = 411,208.40 : x
  2. Step 2: Convert to fraction form
    663,150.80/994,726.20 = 411,208.40/x
  3. Step 3: Cross multiply
    663,150.80x = 994,726.20 × 411,208.40
  4. Step 4: Simplify right side
    663,150.80x = 409,039,769,140.08
  5. Step 5: Solve for x
    x = 409,039,769,140.08/663,150.80
  6. Step 6: Final answer
    x = 616,812.60

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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.