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Finding the Fourth Proportional to 115,758.51, 159,675.23 and 79,443.38

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Solution

The fourth proportional to 115,758.51, 159,675.23 and 79,443.38 is: 109,582.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,758.51 : 159,675.23 = 79,443.38 : x
  2. Step 2: Convert to fraction form
    115,758.51/159,675.23 = 79,443.38/x
  3. Step 3: Cross multiply
    115,758.51x = 159,675.23 × 79,443.38
  4. Step 4: Simplify right side
    115,758.51x = 12,685,139,574.29
  5. Step 5: Solve for x
    x = 12,685,139,574.29/115,758.51
  6. Step 6: Final answer
    x = 109,582.78

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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.