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Finding the Fourth Proportional to 169,779.92, 254,624.31 and 80,856.50

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Solution

The fourth proportional to 169,779.92, 254,624.31 and 80,856.50 is: 121,263.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,779.92 : 254,624.31 = 80,856.50 : x
  2. Step 2: Convert to fraction form
    169,779.92/254,624.31 = 80,856.50/x
  3. Step 3: Cross multiply
    169,779.92x = 254,624.31 × 80,856.50
  4. Step 4: Simplify right side
    169,779.92x = 20,588,029,248.39
  5. Step 5: Solve for x
    x = 20,588,029,248.39/169,779.92
  6. Step 6: Final answer
    x = 121,263.04

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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.