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Finding the Fourth Proportional to 619,856.34, 928,985.28 and 299,933.01

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Solution

The fourth proportional to 619,856.34, 928,985.28 and 299,933.01 is: 449,512.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,856.34 : 928,985.28 = 299,933.01 : x
  2. Step 2: Convert to fraction form
    619,856.34/928,985.28 = 299,933.01/x
  3. Step 3: Cross multiply
    619,856.34x = 928,985.28 × 299,933.01
  4. Step 4: Simplify right side
    619,856.34x = 278,633,351,276.09
  5. Step 5: Solve for x
    x = 278,633,351,276.09/619,856.34
  6. Step 6: Final answer
    x = 449,512.79

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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.