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Finding the Fourth Proportional to 156,282.67, 215,669.86 and 84,662.98

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Solution

The fourth proportional to 156,282.67, 215,669.86 and 84,662.98 is: 116,834.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,282.67 : 215,669.86 = 84,662.98 : x
  2. Step 2: Convert to fraction form
    156,282.67/215,669.86 = 84,662.98/x
  3. Step 3: Cross multiply
    156,282.67x = 215,669.86 × 84,662.98
  4. Step 4: Simplify right side
    156,282.67x = 18,259,253,043.78
  5. Step 5: Solve for x
    x = 18,259,253,043.78/156,282.67
  6. Step 6: Final answer
    x = 116,834.79

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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.