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Finding the Fourth Proportional to 156,492.78, 215,940.23 and 92,818.14

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Solution

The fourth proportional to 156,492.78, 215,940.23 and 92,818.14 is: 128,077.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,492.78 : 215,940.23 = 92,818.14 : x
  2. Step 2: Convert to fraction form
    156,492.78/215,940.23 = 92,818.14/x
  3. Step 3: Cross multiply
    156,492.78x = 215,940.23 × 92,818.14
  4. Step 4: Simplify right side
    156,492.78x = 20,043,170,499.77
  5. Step 5: Solve for x
    x = 20,043,170,499.77/156,492.78
  6. Step 6: Final answer
    x = 128,077.29

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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.