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Finding the Fourth Proportional to 519,888.38, 717,446.03 and 281,424.38

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Solution

The fourth proportional to 519,888.38, 717,446.03 and 281,424.38 is: 388,365.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,888.38 : 717,446.03 = 281,424.38 : x
  2. Step 2: Convert to fraction form
    519,888.38/717,446.03 = 281,424.38/x
  3. Step 3: Cross multiply
    519,888.38x = 717,446.03 × 281,424.38
  4. Step 4: Simplify right side
    519,888.38x = 201,906,799,181.86
  5. Step 5: Solve for x
    x = 201,906,799,181.86/519,888.38
  6. Step 6: Final answer
    x = 388,365.67

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Double scale
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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.