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Finding the Fourth Proportional to 717,551.12, 990,225.60 and 411,640.85

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Solution

The fourth proportional to 717,551.12, 990,225.60 and 411,640.85 is: 568,067.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,551.12 : 990,225.60 = 411,640.85 : x
  2. Step 2: Convert to fraction form
    717,551.12/990,225.60 = 411,640.85/x
  3. Step 3: Cross multiply
    717,551.12x = 990,225.60 × 411,640.85
  4. Step 4: Simplify right side
    717,551.12x = 407,617,307,675.76
  5. Step 5: Solve for x
    x = 407,617,307,675.76/717,551.12
  6. Step 6: Final answer
    x = 568,067.27

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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.