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Finding the Fourth Proportional to 107,177.78, 147,900.48 and 61,863.86

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Solution

The fourth proportional to 107,177.78, 147,900.48 and 61,863.86 is: 85,369.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,177.78 : 147,900.48 = 61,863.86 : x
  2. Step 2: Convert to fraction form
    107,177.78/147,900.48 = 61,863.86/x
  3. Step 3: Cross multiply
    107,177.78x = 147,900.48 × 61,863.86
  4. Step 4: Simplify right side
    107,177.78x = 9,149,694,588.65
  5. Step 5: Solve for x
    x = 9,149,694,588.65/107,177.78
  6. Step 6: Final answer
    x = 85,369.32

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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.