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Finding the Fourth Proportional to 123,520.92, 170,461.98 and 75,800.58

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Solution

The fourth proportional to 123,520.92, 170,461.98 and 75,800.58 is: 104,606.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,520.92 : 170,461.98 = 75,800.58 : x
  2. Step 2: Convert to fraction form
    123,520.92/170,461.98 = 75,800.58/x
  3. Step 3: Cross multiply
    123,520.92x = 170,461.98 × 75,800.58
  4. Step 4: Simplify right side
    123,520.92x = 12,921,116,951.95
  5. Step 5: Solve for x
    x = 12,921,116,951.95/123,520.92
  6. Step 6: Final answer
    x = 104,606.71

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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.