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Finding the Fourth Proportional to 156,448.56, 215,896.93 and 84,827.04

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Solution

The fourth proportional to 156,448.56, 215,896.93 and 84,827.04 is: 117,060.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,448.56 : 215,896.93 = 84,827.04 : x
  2. Step 2: Convert to fraction form
    156,448.56/215,896.93 = 84,827.04/x
  3. Step 3: Cross multiply
    156,448.56x = 215,896.93 × 84,827.04
  4. Step 4: Simplify right side
    156,448.56x = 18,313,897,092.85
  5. Step 5: Solve for x
    x = 18,313,897,092.85/156,448.56
  6. Step 6: Final answer
    x = 117,060.18

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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.