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Finding the Fourth Proportional to 61,954.82, 92,978.96 and 28,698.21

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Solution

The fourth proportional to 61,954.82, 92,978.96 and 28,698.21 is: 43,068.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,954.82 : 92,978.96 = 28,698.21 : x
  2. Step 2: Convert to fraction form
    61,954.82/92,978.96 = 28,698.21/x
  3. Step 3: Cross multiply
    61,954.82x = 92,978.96 × 28,698.21
  4. Step 4: Simplify right side
    61,954.82x = 2,668,329,576.17
  5. Step 5: Solve for x
    x = 2,668,329,576.17/61,954.82
  6. Step 6: Final answer
    x = 43,068.96

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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.