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Finding the Fourth Proportional to 131,692.94, 181,736.28 and 71,263.40

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Solution

The fourth proportional to 131,692.94, 181,736.28 and 71,263.40 is: 98,343.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,692.94 : 181,736.28 = 71,263.40 : x
  2. Step 2: Convert to fraction form
    131,692.94/181,736.28 = 71,263.40/x
  3. Step 3: Cross multiply
    131,692.94x = 181,736.28 × 71,263.40
  4. Step 4: Simplify right side
    131,692.94x = 12,951,144,507.90
  5. Step 5: Solve for x
    x = 12,951,144,507.90/131,692.94
  6. Step 6: Final answer
    x = 98,343.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.