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Finding the Fourth Proportional to 132,556.68, 198,848.78 and 42,576.64

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Solution

The fourth proportional to 132,556.68, 198,848.78 and 42,576.64 is: 63,869.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,556.68 : 198,848.78 = 42,576.64 : x
  2. Step 2: Convert to fraction form
    132,556.68/198,848.78 = 42,576.64/x
  3. Step 3: Cross multiply
    132,556.68x = 198,848.78 × 42,576.64
  4. Step 4: Simplify right side
    132,556.68x = 8,466,312,920.50
  5. Step 5: Solve for x
    x = 8,466,312,920.50/132,556.68
  6. Step 6: Final answer
    x = 63,869.38

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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.