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Finding the Fourth Proportional to 519,704, 717,191.88 and 281,240

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Solution

The fourth proportional to 519,704, 717,191.88 and 281,240 is: 388,111.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,704 : 717,191.88 = 281,240 : x
  2. Step 2: Convert to fraction form
    519,704/717,191.88 = 281,240/x
  3. Step 3: Cross multiply
    519,704x = 717,191.88 × 281,240
  4. Step 4: Simplify right side
    519,704x = 201,703,044,331.20
  5. Step 5: Solve for x
    x = 201,703,044,331.20/519,704
  6. Step 6: Final answer
    x = 388,111.39

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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.