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Finding the Fourth Proportional to 624,221.20, 936,331.80 and 606,725.20

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Solution

The fourth proportional to 624,221.20, 936,331.80 and 606,725.20 is: 910,087.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,221.20 : 936,331.80 = 606,725.20 : x
  2. Step 2: Convert to fraction form
    624,221.20/936,331.80 = 606,725.20/x
  3. Step 3: Cross multiply
    624,221.20x = 936,331.80 × 606,725.20
  4. Step 4: Simplify right side
    624,221.20x = 568,096,098,621.36
  5. Step 5: Solve for x
    x = 568,096,098,621.36/624,221.20
  6. Step 6: Final answer
    x = 910,087.80

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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.