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Finding the Fourth Proportional to 73,930.68, 111,394.80 and 61,071

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Solution

The fourth proportional to 73,930.68, 111,394.80 and 61,071 is: 92,018.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,930.68 : 111,394.80 = 61,071 : x
  2. Step 2: Convert to fraction form
    73,930.68/111,394.80 = 61,071/x
  3. Step 3: Cross multiply
    73,930.68x = 111,394.80 × 61,071
  4. Step 4: Simplify right side
    73,930.68x = 6,802,991,830.80
  5. Step 5: Solve for x
    x = 6,802,991,830.80/73,930.68
  6. Step 6: Final answer
    x = 92,018.52

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.