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Finding the Fourth Proportional to 156,991.98, 216,654.62 and 89,936.94

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Solution

The fourth proportional to 156,991.98, 216,654.62 and 89,936.94 is: 124,116.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,991.98 : 216,654.62 = 89,936.94 : x
  2. Step 2: Convert to fraction form
    156,991.98/216,654.62 = 89,936.94/x
  3. Step 3: Cross multiply
    156,991.98x = 216,654.62 × 89,936.94
  4. Step 4: Simplify right side
    156,991.98x = 19,485,253,559.66
  5. Step 5: Solve for x
    x = 19,485,253,559.66/156,991.98
  6. Step 6: Final answer
    x = 124,116.24

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1.5x scale

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.