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Finding the Fourth Proportional to 593,145.64, 818,541.34 and 321,215.64

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Solution

The fourth proportional to 593,145.64, 818,541.34 and 321,215.64 is: 443,277.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    593,145.64 : 818,541.34 = 321,215.64 : x
  2. Step 2: Convert to fraction form
    593,145.64/818,541.34 = 321,215.64/x
  3. Step 3: Cross multiply
    593,145.64x = 818,541.34 × 321,215.64
  4. Step 4: Simplify right side
    593,145.64x = 262,928,280,394.56
  5. Step 5: Solve for x
    x = 262,928,280,394.56/593,145.64
  6. Step 6: Final answer
    x = 443,277.78

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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.