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Finding the Fourth Proportional to 528,857.60, 794,452.80 and 509,028.80

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Solution

The fourth proportional to 528,857.60, 794,452.80 and 509,028.80 is: 764,665.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,857.60 : 794,452.80 = 509,028.80 : x
  2. Step 2: Convert to fraction form
    528,857.60/794,452.80 = 509,028.80/x
  3. Step 3: Cross multiply
    528,857.60x = 794,452.80 × 509,028.80
  4. Step 4: Simplify right side
    528,857.60x = 404,399,355,440.64
  5. Step 5: Solve for x
    x = 404,399,355,440.64/528,857.60
  6. Step 6: Final answer
    x = 764,665.87

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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.