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Finding the Fourth Proportional to 717,877.91, 990,718.02 and 411,967.18

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Solution

The fourth proportional to 717,877.91, 990,718.02 and 411,967.18 is: 568,541.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,877.91 : 990,718.02 = 411,967.18 : x
  2. Step 2: Convert to fraction form
    717,877.91/990,718.02 = 411,967.18/x
  3. Step 3: Cross multiply
    717,877.91x = 990,718.02 × 411,967.18
  4. Step 4: Simplify right side
    717,877.91x = 408,143,309,291.54
  5. Step 5: Solve for x
    x = 408,143,309,291.54/717,877.91
  6. Step 6: Final answer
    x = 568,541.40

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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.