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Finding the Fourth Proportional to 107,176.93, 147,893.51 and 61,869.51

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Solution

The fourth proportional to 107,176.93, 147,893.51 and 61,869.51 is: 85,373.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,176.93 : 147,893.51 = 61,869.51 : x
  2. Step 2: Convert to fraction form
    107,176.93/147,893.51 = 61,869.51/x
  3. Step 3: Cross multiply
    107,176.93x = 147,893.51 × 61,869.51
  4. Step 4: Simplify right side
    107,176.93x = 9,150,099,546.56
  5. Step 5: Solve for x
    x = 9,150,099,546.56/107,176.93
  6. Step 6: Final answer
    x = 85,373.78

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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.