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Finding the Fourth Proportional to 519,747.87, 717,244.49 and 290,308.42

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Solution

The fourth proportional to 519,747.87, 717,244.49 and 290,308.42 is: 400,621.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,747.87 : 717,244.49 = 290,308.42 : x
  2. Step 2: Convert to fraction form
    519,747.87/717,244.49 = 290,308.42/x
  3. Step 3: Cross multiply
    519,747.87x = 717,244.49 × 290,308.42
  4. Step 4: Simplify right side
    519,747.87x = 208,222,114,634.95
  5. Step 5: Solve for x
    x = 208,222,114,634.95/519,747.87
  6. Step 6: Final answer
    x = 400,621.39

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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.