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Finding the Fourth Proportional to 94,709.80, 141,891.90 and 57,730.60

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Solution

The fourth proportional to 94,709.80, 141,891.90 and 57,730.60 is: 86,490.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,709.80 : 141,891.90 = 57,730.60 : x
  2. Step 2: Convert to fraction form
    94,709.80/141,891.90 = 57,730.60/x
  3. Step 3: Cross multiply
    94,709.80x = 141,891.90 × 57,730.60
  4. Step 4: Simplify right side
    94,709.80x = 8,191,504,522.14
  5. Step 5: Solve for x
    x = 8,191,504,522.14/94,709.80
  6. Step 6: Final answer
    x = 86,490.57

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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.