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Finding the Fourth Proportional to 123,383.76, 185,075.64 and 60,991.44

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Solution

The fourth proportional to 123,383.76, 185,075.64 and 60,991.44 is: 91,487.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,383.76 : 185,075.64 = 60,991.44 : x
  2. Step 2: Convert to fraction form
    123,383.76/185,075.64 = 60,991.44/x
  3. Step 3: Cross multiply
    123,383.76x = 185,075.64 × 60,991.44
  4. Step 4: Simplify right side
    123,383.76x = 11,288,029,792.52
  5. Step 5: Solve for x
    x = 11,288,029,792.52/123,383.76
  6. Step 6: Final answer
    x = 91,487.16

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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.