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Finding the Fourth Proportional to 717,550.12, 990,224.22 and 411,639.85

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Solution

The fourth proportional to 717,550.12, 990,224.22 and 411,639.85 is: 568,065.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,550.12 : 990,224.22 = 411,639.85 : x
  2. Step 2: Convert to fraction form
    717,550.12/990,224.22 = 411,639.85/x
  3. Step 3: Cross multiply
    717,550.12x = 990,224.22 × 411,639.85
  4. Step 4: Simplify right side
    717,550.12x = 407,615,749,387.17
  5. Step 5: Solve for x
    x = 407,615,749,387.17/717,550.12
  6. Step 6: Final answer
    x = 568,065.89

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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.