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Finding the Fourth Proportional to 105,695.38, 145,868.79 and 57,958.03

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Solution

The fourth proportional to 105,695.38, 145,868.79 and 57,958.03 is: 79,987.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,695.38 : 145,868.79 = 57,958.03 : x
  2. Step 2: Convert to fraction form
    105,695.38/145,868.79 = 57,958.03/x
  3. Step 3: Cross multiply
    105,695.38x = 145,868.79 × 57,958.03
  4. Step 4: Simplify right side
    105,695.38x = 8,454,267,706.88
  5. Step 5: Solve for x
    x = 8,454,267,706.88/105,695.38
  6. Step 6: Final answer
    x = 79,987.11

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