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Finding the Fourth Proportional to 519,317.94, 778,968.81 and 266,452.50

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Solution

The fourth proportional to 519,317.94, 778,968.81 and 266,452.50 is: 399,674.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,317.94 : 778,968.81 = 266,452.50 : x
  2. Step 2: Convert to fraction form
    519,317.94/778,968.81 = 266,452.50/x
  3. Step 3: Cross multiply
    519,317.94x = 778,968.81 × 266,452.50
  4. Step 4: Simplify right side
    519,317.94x = 207,558,186,846.53
  5. Step 5: Solve for x
    x = 207,558,186,846.53/519,317.94
  6. Step 6: Final answer
    x = 399,674.59

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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.