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Finding the Fourth Proportional to 717,741.58, 990,505.74 and 411,873.97

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Solution

The fourth proportional to 717,741.58, 990,505.74 and 411,873.97 is: 568,398.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,741.58 : 990,505.74 = 411,873.97 : x
  2. Step 2: Convert to fraction form
    717,741.58/990,505.74 = 411,873.97/x
  3. Step 3: Cross multiply
    717,741.58x = 990,505.74 × 411,873.97
  4. Step 4: Simplify right side
    717,741.58x = 407,963,531,441.59
  5. Step 5: Solve for x
    x = 407,963,531,441.59/717,741.58
  6. Step 6: Final answer
    x = 568,398.91

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Double scale
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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.