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Finding the Fourth Proportional to 536,039.78, 739,773.71 and 354,436.76

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Solution

The fourth proportional to 536,039.78, 739,773.71 and 354,436.76 is: 489,148.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,039.78 : 739,773.71 = 354,436.76 : x
  2. Step 2: Convert to fraction form
    536,039.78/739,773.71 = 354,436.76/x
  3. Step 3: Cross multiply
    536,039.78x = 739,773.71 × 354,436.76
  4. Step 4: Simplify right side
    536,039.78x = 262,202,998,311.97
  5. Step 5: Solve for x
    x = 262,202,998,311.97/536,039.78
  6. Step 6: Final answer
    x = 489,148.40

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