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Finding the Fourth Proportional to 115,239.81, 172,859.72 and 36,362.01

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Solution

The fourth proportional to 115,239.81, 172,859.72 and 36,362.01 is: 54,543.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,239.81 : 172,859.72 = 36,362.01 : x
  2. Step 2: Convert to fraction form
    115,239.81/172,859.72 = 36,362.01/x
  3. Step 3: Cross multiply
    115,239.81x = 172,859.72 × 36,362.01
  4. Step 4: Simplify right side
    115,239.81x = 6,285,526,685.43
  5. Step 5: Solve for x
    x = 6,285,526,685.43/115,239.81
  6. Step 6: Final answer
    x = 54,543.02

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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.