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Finding the Fourth Proportional to 863,785, 1,191,948.58 and 557,874.73

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Solution

The fourth proportional to 863,785, 1,191,948.58 and 557,874.73 is: 769,818.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,785 : 1,191,948.58 = 557,874.73 : x
  2. Step 2: Convert to fraction form
    863,785/1,191,948.58 = 557,874.73/x
  3. Step 3: Cross multiply
    863,785x = 1,191,948.58 × 557,874.73
  4. Step 4: Simplify right side
    863,785x = 664,957,992,241.38
  5. Step 5: Solve for x
    x = 664,957,992,241.38/863,785
  6. Step 6: Final answer
    x = 769,818.87

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Half scale
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Double scale
Find fourth proportional to 863,786, 1,191,949.96 and 557,875.73
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.