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Finding the Fourth Proportional to 123,875.92, 170,944.86 and 70,165.90

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Solution

The fourth proportional to 123,875.92, 170,944.86 and 70,165.90 is: 96,826.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,875.92 : 170,944.86 = 70,165.90 : x
  2. Step 2: Convert to fraction form
    123,875.92/170,944.86 = 70,165.90/x
  3. Step 3: Cross multiply
    123,875.92x = 170,944.86 × 70,165.90
  4. Step 4: Simplify right side
    123,875.92x = 11,994,499,952.27
  5. Step 5: Solve for x
    x = 11,994,499,952.27/123,875.92
  6. Step 6: Final answer
    x = 96,826.73

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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.