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Finding the Fourth Proportional to 112,616.60, 168,827.70 and 57,212.60

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Solution

The fourth proportional to 112,616.60, 168,827.70 and 57,212.60 is: 85,769.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,616.60 : 168,827.70 = 57,212.60 : x
  2. Step 2: Convert to fraction form
    112,616.60/168,827.70 = 57,212.60/x
  3. Step 3: Cross multiply
    112,616.60x = 168,827.70 × 57,212.60
  4. Step 4: Simplify right side
    112,616.60x = 9,659,071,669.02
  5. Step 5: Solve for x
    x = 9,659,071,669.02/112,616.60
  6. Step 6: Final answer
    x = 85,769.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.