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Finding the Fourth Proportional to 123,728.40, 185,592.60 and 94,203.90

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Solution

The fourth proportional to 123,728.40, 185,592.60 and 94,203.90 is: 141,305.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,728.40 : 185,592.60 = 94,203.90 : x
  2. Step 2: Convert to fraction form
    123,728.40/185,592.60 = 94,203.90/x
  3. Step 3: Cross multiply
    123,728.40x = 185,592.60 × 94,203.90
  4. Step 4: Simplify right side
    123,728.40x = 17,483,546,731.14
  5. Step 5: Solve for x
    x = 17,483,546,731.14/123,728.40
  6. Step 6: Final answer
    x = 141,305.85

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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.