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Finding the Fourth Proportional to 167,911.17, 251,866.80 and 55,561.20

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Solution

The fourth proportional to 167,911.17, 251,866.80 and 55,561.20 is: 83,341.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,911.17 : 251,866.80 = 55,561.20 : x
  2. Step 2: Convert to fraction form
    167,911.17/251,866.80 = 55,561.20/x
  3. Step 3: Cross multiply
    167,911.17x = 251,866.80 × 55,561.20
  4. Step 4: Simplify right side
    167,911.17x = 13,994,021,648.16
  5. Step 5: Solve for x
    x = 13,994,021,648.16/167,911.17
  6. Step 6: Final answer
    x = 83,341.81

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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.