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Finding the Fourth Proportional to 115,132.72, 172,722.37 and 48,573

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Solution

The fourth proportional to 115,132.72, 172,722.37 and 48,573 is: 72,869.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,132.72 : 172,722.37 = 48,573 : x
  2. Step 2: Convert to fraction form
    115,132.72/172,722.37 = 48,573/x
  3. Step 3: Cross multiply
    115,132.72x = 172,722.37 × 48,573
  4. Step 4: Simplify right side
    115,132.72x = 8,389,643,678.01
  5. Step 5: Solve for x
    x = 8,389,643,678.01/115,132.72
  6. Step 6: Final answer
    x = 72,869.33

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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.