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Finding the Fourth Proportional to 717,789.97, 990,539.57 and 411,859.65

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Solution

The fourth proportional to 717,789.97, 990,539.57 and 411,859.65 is: 568,360.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,789.97 : 990,539.57 = 411,859.65 : x
  2. Step 2: Convert to fraction form
    717,789.97/990,539.57 = 411,859.65/x
  3. Step 3: Cross multiply
    717,789.97x = 990,539.57 × 411,859.65
  4. Step 4: Simplify right side
    717,789.97x = 407,963,280,611.35
  5. Step 5: Solve for x
    x = 407,963,280,611.35/717,789.97
  6. Step 6: Final answer
    x = 568,360.24

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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.