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Finding the Fourth Proportional to 156,673.77, 216,209.25 and 85,053.27

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Solution

The fourth proportional to 156,673.77, 216,209.25 and 85,053.27 is: 117,373.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,673.77 : 216,209.25 = 85,053.27 : x
  2. Step 2: Convert to fraction form
    156,673.77/216,209.25 = 85,053.27/x
  3. Step 3: Cross multiply
    156,673.77x = 216,209.25 × 85,053.27
  4. Step 4: Simplify right side
    156,673.77x = 18,389,303,716.75
  5. Step 5: Solve for x
    x = 18,389,303,716.75/156,673.77
  6. Step 6: Final answer
    x = 117,373.21

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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.