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Finding the Fourth Proportional to 61,850.55, 92,771.13 and 19,728.93

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Solution

The fourth proportional to 61,850.55, 92,771.13 and 19,728.93 is: 29,591.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,850.55 : 92,771.13 = 19,728.93 : x
  2. Step 2: Convert to fraction form
    61,850.55/92,771.13 = 19,728.93/x
  3. Step 3: Cross multiply
    61,850.55x = 92,771.13 × 19,728.93
  4. Step 4: Simplify right side
    61,850.55x = 1,830,275,129.79
  5. Step 5: Solve for x
    x = 1,830,275,129.79/61,850.55
  6. Step 6: Final answer
    x = 29,591.90

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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.