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Finding the Fourth Proportional to 73,708.88, 101,718.29 and 40,174.88

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Solution

The fourth proportional to 73,708.88, 101,718.29 and 40,174.88 is: 55,441.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,708.88 : 101,718.29 = 40,174.88 : x
  2. Step 2: Convert to fraction form
    73,708.88/101,718.29 = 40,174.88/x
  3. Step 3: Cross multiply
    73,708.88x = 101,718.29 × 40,174.88
  4. Step 4: Simplify right side
    73,708.88x = 4,086,519,686.40
  5. Step 5: Solve for x
    x = 4,086,519,686.40/73,708.88
  6. Step 6: Final answer
    x = 55,441.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.