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Finding the Fourth Proportional to 239,471.76, 359,103.56 and 68,655.86

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Solution

The fourth proportional to 239,471.76, 359,103.56 and 68,655.86 is: 102,953.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,471.76 : 359,103.56 = 68,655.86 : x
  2. Step 2: Convert to fraction form
    239,471.76/359,103.56 = 68,655.86/x
  3. Step 3: Cross multiply
    239,471.76x = 359,103.56 × 68,655.86
  4. Step 4: Simplify right side
    239,471.76x = 24,654,563,740.86
  5. Step 5: Solve for x
    x = 24,654,563,740.86/239,471.76
  6. Step 6: Final answer
    x = 102,953.95

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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.