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Finding the Fourth Proportional to 221,779.76, 332,664.83 and 61,851.43

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Solution

The fourth proportional to 221,779.76, 332,664.83 and 61,851.43 is: 92,775.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,779.76 : 332,664.83 = 61,851.43 : x
  2. Step 2: Convert to fraction form
    221,779.76/332,664.83 = 61,851.43/x
  3. Step 3: Cross multiply
    221,779.76x = 332,664.83 × 61,851.43
  4. Step 4: Simplify right side
    221,779.76x = 20,575,793,473.63
  5. Step 5: Solve for x
    x = 20,575,793,473.63/221,779.76
  6. Step 6: Final answer
    x = 92,775.79

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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.