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Finding the Fourth Proportional to 61,860.60, 92,790.90 and 30,756.60

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Solution

The fourth proportional to 61,860.60, 92,790.90 and 30,756.60 is: 46,134.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,860.60 : 92,790.90 = 30,756.60 : x
  2. Step 2: Convert to fraction form
    61,860.60/92,790.90 = 30,756.60/x
  3. Step 3: Cross multiply
    61,860.60x = 92,790.90 × 30,756.60
  4. Step 4: Simplify right side
    61,860.60x = 2,853,932,594.94
  5. Step 5: Solve for x
    x = 2,853,932,594.94/61,860.60
  6. Step 6: Final answer
    x = 46,134.90

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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.