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Finding the Fourth Proportional to 519,228.67, 716,571.56 and 289,830.60

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Solution

The fourth proportional to 519,228.67, 716,571.56 and 289,830.60 is: 399,986.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,228.67 : 716,571.56 = 289,830.60 : x
  2. Step 2: Convert to fraction form
    519,228.67/716,571.56 = 289,830.60/x
  3. Step 3: Cross multiply
    519,228.67x = 716,571.56 × 289,830.60
  4. Step 4: Simplify right side
    519,228.67x = 207,684,365,177.74
  5. Step 5: Solve for x
    x = 207,684,365,177.74/519,228.67
  6. Step 6: Final answer
    x = 399,986.32

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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.