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Finding the Fourth Proportional to 171,790.92, 257,702.79 and 53,430.48

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Solution

The fourth proportional to 171,790.92, 257,702.79 and 53,430.48 is: 80,150.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,790.92 : 257,702.79 = 53,430.48 : x
  2. Step 2: Convert to fraction form
    171,790.92/257,702.79 = 53,430.48/x
  3. Step 3: Cross multiply
    171,790.92x = 257,702.79 × 53,430.48
  4. Step 4: Simplify right side
    171,790.92x = 13,769,183,767.04
  5. Step 5: Solve for x
    x = 13,769,183,767.04/171,790.92
  6. Step 6: Final answer
    x = 80,150.82

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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.