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Finding the Fourth Proportional to 519,753.49, 717,262.76 and 290,320.44

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Solution

The fourth proportional to 519,753.49, 717,262.76 and 290,320.44 is: 400,643.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,753.49 : 717,262.76 = 290,320.44 : x
  2. Step 2: Convert to fraction form
    519,753.49/717,262.76 = 290,320.44/x
  3. Step 3: Cross multiply
    519,753.49x = 717,262.76 × 290,320.44
  4. Step 4: Simplify right side
    519,753.49x = 208,236,038,114.88
  5. Step 5: Solve for x
    x = 208,236,038,114.88/519,753.49
  6. Step 6: Final answer
    x = 400,643.85

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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.