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Finding the Fourth Proportional to 519,818, 717,351 and 281,354

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Solution

The fourth proportional to 519,818, 717,351 and 281,354 is: 388,269.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,818 : 717,351 = 281,354 : x
  2. Step 2: Convert to fraction form
    519,818/717,351 = 281,354/x
  3. Step 3: Cross multiply
    519,818x = 717,351 × 281,354
  4. Step 4: Simplify right side
    519,818x = 201,829,573,254
  5. Step 5: Solve for x
    x = 201,829,573,254/519,818
  6. Step 6: Final answer
    x = 388,269.69

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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.