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Finding the Fourth Proportional to 472,759.92, 708,322.32 and 318,598.56

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Solution

The fourth proportional to 472,759.92, 708,322.32 and 318,598.56 is: 477,346.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,759.92 : 708,322.32 = 318,598.56 : x
  2. Step 2: Convert to fraction form
    472,759.92/708,322.32 = 318,598.56/x
  3. Step 3: Cross multiply
    472,759.92x = 708,322.32 × 318,598.56
  4. Step 4: Simplify right side
    472,759.92x = 225,670,471,167.86
  5. Step 5: Solve for x
    x = 225,670,471,167.86/472,759.92
  6. Step 6: Final answer
    x = 477,346.88

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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.