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Finding the Fourth Proportional to 61,979.82, 85,528.68 and 33,685.32

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Solution

The fourth proportional to 61,979.82, 85,528.68 and 33,685.32 is: 46,483.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,979.82 : 85,528.68 = 33,685.32 : x
  2. Step 2: Convert to fraction form
    61,979.82/85,528.68 = 33,685.32/x
  3. Step 3: Cross multiply
    61,979.82x = 85,528.68 × 33,685.32
  4. Step 4: Simplify right side
    61,979.82x = 2,881,060,954.98
  5. Step 5: Solve for x
    x = 2,881,060,954.98/61,979.82
  6. Step 6: Final answer
    x = 46,483.85

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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.