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Finding the Fourth Proportional to 127,950.67, 191,696.14 and 75,331.45

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Solution

The fourth proportional to 127,950.67, 191,696.14 and 75,331.45 is: 112,861.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,950.67 : 191,696.14 = 75,331.45 : x
  2. Step 2: Convert to fraction form
    127,950.67/191,696.14 = 75,331.45/x
  3. Step 3: Cross multiply
    127,950.67x = 191,696.14 × 75,331.45
  4. Step 4: Simplify right side
    127,950.67x = 14,440,748,185.60
  5. Step 5: Solve for x
    x = 14,440,748,185.60/127,950.67
  6. Step 6: Final answer
    x = 112,861.84

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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.