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Finding the Fourth Proportional to 519,700, 717,186 and 281,236

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Solution

The fourth proportional to 519,700, 717,186 and 281,236 is: 388,105.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,700 : 717,186 = 281,236 : x
  2. Step 2: Convert to fraction form
    519,700/717,186 = 281,236/x
  3. Step 3: Cross multiply
    519,700x = 717,186 × 281,236
  4. Step 4: Simplify right side
    519,700x = 201,698,521,896
  5. Step 5: Solve for x
    x = 201,698,521,896/519,700
  6. Step 6: Final answer
    x = 388,105.68

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.