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Finding the Fourth Proportional to 618,383.80, 927,575.70 and 512,095.60

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Solution

The fourth proportional to 618,383.80, 927,575.70 and 512,095.60 is: 768,143.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,383.80 : 927,575.70 = 512,095.60 : x
  2. Step 2: Convert to fraction form
    618,383.80/927,575.70 = 512,095.60/x
  3. Step 3: Cross multiply
    618,383.80x = 927,575.70 × 512,095.60
  4. Step 4: Simplify right side
    618,383.80x = 475,007,434,636.92
  5. Step 5: Solve for x
    x = 475,007,434,636.92/618,383.80
  6. Step 6: Final answer
    x = 768,143.40

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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.