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Finding the Fourth Proportional to 61,629.70, 92,314.95 and 51,261.70

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Solution

The fourth proportional to 61,629.70, 92,314.95 and 51,261.70 is: 76,784.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,629.70 : 92,314.95 = 51,261.70 : x
  2. Step 2: Convert to fraction form
    61,629.70/92,314.95 = 51,261.70/x
  3. Step 3: Cross multiply
    61,629.70x = 92,314.95 × 51,261.70
  4. Step 4: Simplify right side
    61,629.70x = 4,732,221,272.42
  5. Step 5: Solve for x
    x = 4,732,221,272.42/61,629.70
  6. Step 6: Final answer
    x = 76,784.75

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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.