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Finding the Fourth Proportional to 519,206.60, 716,475.21 and 289,745.89

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Solution

The fourth proportional to 519,206.60, 716,475.21 and 289,745.89 is: 399,832.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,206.60 : 716,475.21 = 289,745.89 : x
  2. Step 2: Convert to fraction form
    519,206.60/716,475.21 = 289,745.89/x
  3. Step 3: Cross multiply
    519,206.60x = 716,475.21 × 289,745.89
  4. Step 4: Simplify right side
    519,206.60x = 207,595,747,384.39
  5. Step 5: Solve for x
    x = 207,595,747,384.39/519,206.60
  6. Step 6: Final answer
    x = 399,832.64

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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.