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Finding the Fourth Proportional to 172,772.80, 258,867.60 and 83,834.80

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Solution

The fourth proportional to 172,772.80, 258,867.60 and 83,834.80 is: 125,610.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,772.80 : 258,867.60 = 83,834.80 : x
  2. Step 2: Convert to fraction form
    172,772.80/258,867.60 = 83,834.80/x
  3. Step 3: Cross multiply
    172,772.80x = 258,867.60 × 83,834.80
  4. Step 4: Simplify right side
    172,772.80x = 21,702,113,472.48
  5. Step 5: Solve for x
    x = 21,702,113,472.48/172,772.80
  6. Step 6: Final answer
    x = 125,610.71

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1.5x scale

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.