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Finding the Fourth Proportional to 519,266.60, 716,593.38 and 289,845.80

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Solution

The fourth proportional to 519,266.60, 716,593.38 and 289,845.80 is: 399,990.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,266.60 : 716,593.38 = 289,845.80 : x
  2. Step 2: Convert to fraction form
    519,266.60/716,593.38 = 289,845.80/x
  3. Step 3: Cross multiply
    519,266.60x = 716,593.38 × 289,845.80
  4. Step 4: Simplify right side
    519,266.60x = 207,701,581,500.80
  5. Step 5: Solve for x
    x = 207,701,581,500.80/519,266.60
  6. Step 6: Final answer
    x = 399,990.26

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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.