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Finding the Fourth Proportional to 961,992, 1,327,544.64 and 553,944.96

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Solution

The fourth proportional to 961,992, 1,327,544.64 and 553,944.96 is: 764,441.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    961,992 : 1,327,544.64 = 553,944.96 : x
  2. Step 2: Convert to fraction form
    961,992/1,327,544.64 = 553,944.96/x
  3. Step 3: Cross multiply
    961,992x = 1,327,544.64 × 553,944.96
  4. Step 4: Simplify right side
    961,992x = 735,386,662,503.01
  5. Step 5: Solve for x
    x = 735,386,662,503.01/961,992
  6. Step 6: Final answer
    x = 764,441.56

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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.