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Finding the Fourth Proportional to 517,738.26, 776,736.78 and 411,522.96

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Solution

The fourth proportional to 517,738.26, 776,736.78 and 411,522.96 is: 617,387.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,738.26 : 776,736.78 = 411,522.96 : x
  2. Step 2: Convert to fraction form
    517,738.26/776,736.78 = 411,522.96/x
  3. Step 3: Cross multiply
    517,738.26x = 776,736.78 × 411,522.96
  4. Step 4: Simplify right side
    517,738.26x = 319,645,018,846.47
  5. Step 5: Solve for x
    x = 319,645,018,846.47/517,738.26
  6. Step 6: Final answer
    x = 617,387.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.