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Finding the Fourth Proportional to 624,645.75, 862,011.27 and 338,168.19

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Solution

The fourth proportional to 624,645.75, 862,011.27 and 338,168.19 is: 466,672.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,645.75 : 862,011.27 = 338,168.19 : x
  2. Step 2: Convert to fraction form
    624,645.75/862,011.27 = 338,168.19/x
  3. Step 3: Cross multiply
    624,645.75x = 862,011.27 × 338,168.19
  4. Step 4: Simplify right side
    624,645.75x = 291,504,790,935.50
  5. Step 5: Solve for x
    x = 291,504,790,935.50/624,645.75
  6. Step 6: Final answer
    x = 466,672.18

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.