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Finding the Fourth Proportional to 61,790.67, 85,267.82 and 34,931.58

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Solution

The fourth proportional to 61,790.67, 85,267.82 and 34,931.58 is: 48,203.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,790.67 : 85,267.82 = 34,931.58 : x
  2. Step 2: Convert to fraction form
    61,790.67/85,267.82 = 34,931.58/x
  3. Step 3: Cross multiply
    61,790.67x = 85,267.82 × 34,931.58
  4. Step 4: Simplify right side
    61,790.67x = 2,978,539,675.76
  5. Step 5: Solve for x
    x = 2,978,539,675.76/61,790.67
  6. Step 6: Final answer
    x = 48,203.71

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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.