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Finding the Fourth Proportional to 156,497.98, 215,933.97 and 92,856.46

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Solution

The fourth proportional to 156,497.98, 215,933.97 and 92,856.46 is: 128,122.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,497.98 : 215,933.97 = 92,856.46 : x
  2. Step 2: Convert to fraction form
    156,497.98/215,933.97 = 92,856.46/x
  3. Step 3: Cross multiply
    156,497.98x = 215,933.97 × 92,856.46
  4. Step 4: Simplify right side
    156,497.98x = 20,050,864,047.95
  5. Step 5: Solve for x
    x = 20,050,864,047.95/156,497.98
  6. Step 6: Final answer
    x = 128,122.19

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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.