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Finding the Fourth Proportional to 107,279.64, 148,052.61 and 61,965.91

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Solution

The fourth proportional to 107,279.64, 148,052.61 and 61,965.91 is: 85,516.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,279.64 : 148,052.61 = 61,965.91 : x
  2. Step 2: Convert to fraction form
    107,279.64/148,052.61 = 61,965.91/x
  3. Step 3: Cross multiply
    107,279.64x = 148,052.61 × 61,965.91
  4. Step 4: Simplify right side
    107,279.64x = 9,174,214,891.59
  5. Step 5: Solve for x
    x = 9,174,214,891.59/107,279.64
  6. Step 6: Final answer
    x = 85,516.83

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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.