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Finding the Fourth Proportional to 521,805.89, 719,773.85 and 344,995.70

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Solution

The fourth proportional to 521,805.89, 719,773.85 and 344,995.70 is: 475,883.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,805.89 : 719,773.85 = 344,995.70 : x
  2. Step 2: Convert to fraction form
    521,805.89/719,773.85 = 344,995.70/x
  3. Step 3: Cross multiply
    521,805.89x = 719,773.85 × 344,995.70
  4. Step 4: Simplify right side
    521,805.89x = 248,318,880,486.07
  5. Step 5: Solve for x
    x = 248,318,880,486.07/521,805.89
  6. Step 6: Final answer
    x = 475,883.63

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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.