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Finding the Fourth Proportional to 107,884.80, 148,881.60 and 60,137.76

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Solution

The fourth proportional to 107,884.80, 148,881.60 and 60,137.76 is: 82,990.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,884.80 : 148,881.60 = 60,137.76 : x
  2. Step 2: Convert to fraction form
    107,884.80/148,881.60 = 60,137.76/x
  3. Step 3: Cross multiply
    107,884.80x = 148,881.60 × 60,137.76
  4. Step 4: Simplify right side
    107,884.80x = 8,953,405,929.22
  5. Step 5: Solve for x
    x = 8,953,405,929.22/107,884.80
  6. Step 6: Final answer
    x = 82,990.43

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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.