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Finding the Fourth Proportional to 571,907.45, 789,233.02 and 317,258.64

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Solution

The fourth proportional to 571,907.45, 789,233.02 and 317,258.64 is: 437,817.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,907.45 : 789,233.02 = 317,258.64 : x
  2. Step 2: Convert to fraction form
    571,907.45/789,233.02 = 317,258.64/x
  3. Step 3: Cross multiply
    571,907.45x = 789,233.02 × 317,258.64
  4. Step 4: Simplify right side
    571,907.45x = 250,390,993,775.15
  5. Step 5: Solve for x
    x = 250,390,993,775.15/571,907.45
  6. Step 6: Final answer
    x = 437,817.33

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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.