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Finding the Fourth Proportional to 101,071.97, 139,476.88 and 55,748.98

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Solution

The fourth proportional to 101,071.97, 139,476.88 and 55,748.98 is: 76,932.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,071.97 : 139,476.88 = 55,748.98 : x
  2. Step 2: Convert to fraction form
    101,071.97/139,476.88 = 55,748.98/x
  3. Step 3: Cross multiply
    101,071.97x = 139,476.88 × 55,748.98
  4. Step 4: Simplify right side
    101,071.97x = 7,775,693,793.58
  5. Step 5: Solve for x
    x = 7,775,693,793.58/101,071.97
  6. Step 6: Final answer
    x = 76,932.25

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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.