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Finding the Fourth Proportional to 156,924.78, 216,560.94 and 88,941.90

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Solution

The fourth proportional to 156,924.78, 216,560.94 and 88,941.90 is: 122,742.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,924.78 : 216,560.94 = 88,941.90 : x
  2. Step 2: Convert to fraction form
    156,924.78/216,560.94 = 88,941.90/x
  3. Step 3: Cross multiply
    156,924.78x = 216,560.94 × 88,941.90
  4. Step 4: Simplify right side
    156,924.78x = 19,261,341,469.39
  5. Step 5: Solve for x
    x = 19,261,341,469.39/156,924.78
  6. Step 6: Final answer
    x = 122,742.51

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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.