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Finding the Fourth Proportional to 637,744.05, 880,053.51 and 396,021.42

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Solution

The fourth proportional to 637,744.05, 880,053.51 and 396,021.42 is: 546,488.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,744.05 : 880,053.51 = 396,021.42 : x
  2. Step 2: Convert to fraction form
    637,744.05/880,053.51 = 396,021.42/x
  3. Step 3: Cross multiply
    637,744.05x = 880,053.51 × 396,021.42
  4. Step 4: Simplify right side
    637,744.05x = 348,520,040,706.18
  5. Step 5: Solve for x
    x = 348,520,040,706.18/637,744.05
  6. Step 6: Final answer
    x = 546,488.89

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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.