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Finding the Fourth Proportional to 662,983.60, 994,475.40 and 411,041.20

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Solution

The fourth proportional to 662,983.60, 994,475.40 and 411,041.20 is: 616,561.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,983.60 : 994,475.40 = 411,041.20 : x
  2. Step 2: Convert to fraction form
    662,983.60/994,475.40 = 411,041.20/x
  3. Step 3: Cross multiply
    662,983.60x = 994,475.40 × 411,041.20
  4. Step 4: Simplify right side
    662,983.60x = 408,770,361,786.48
  5. Step 5: Solve for x
    x = 408,770,361,786.48/662,983.60
  6. Step 6: Final answer
    x = 616,561.80

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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.