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Finding the Fourth Proportional to 107,888.68, 161,917.76 and 74,841.27

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Solution

The fourth proportional to 107,888.68, 161,917.76 and 74,841.27 is: 112,320.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,888.68 : 161,917.76 = 74,841.27 : x
  2. Step 2: Convert to fraction form
    107,888.68/161,917.76 = 74,841.27/x
  3. Step 3: Cross multiply
    107,888.68x = 161,917.76 × 74,841.27
  4. Step 4: Simplify right side
    107,888.68x = 12,118,130,793.96
  5. Step 5: Solve for x
    x = 12,118,130,793.96/107,888.68
  6. Step 6: Final answer
    x = 112,320.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.