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Finding the Fourth Proportional to 127,244.51, 190,865.55 and 77,338.39

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Solution

The fourth proportional to 127,244.51, 190,865.55 and 77,338.39 is: 116,006.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,244.51 : 190,865.55 = 77,338.39 : x
  2. Step 2: Convert to fraction form
    127,244.51/190,865.55 = 77,338.39/x
  3. Step 3: Cross multiply
    127,244.51x = 190,865.55 × 77,338.39
  4. Step 4: Simplify right side
    127,244.51x = 14,761,234,343.46
  5. Step 5: Solve for x
    x = 14,761,234,343.46/127,244.51
  6. Step 6: Final answer
    x = 116,006.85

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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.