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Finding the Fourth Proportional to 717,735.77, 990,497.82 and 411,868.16

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Solution

The fourth proportional to 717,735.77, 990,497.82 and 411,868.16 is: 568,390.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,735.77 : 990,497.82 = 411,868.16 : x
  2. Step 2: Convert to fraction form
    717,735.77/990,497.82 = 411,868.16/x
  3. Step 3: Cross multiply
    717,735.77x = 990,497.82 × 411,868.16
  4. Step 4: Simplify right side
    717,735.77x = 407,954,514,607.41
  5. Step 5: Solve for x
    x = 407,954,514,607.41/717,735.77
  6. Step 6: Final answer
    x = 568,390.95

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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.