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Finding the Fourth Proportional to 61,606.38, 85,016.75 and 33,312

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Solution

The fourth proportional to 61,606.38, 85,016.75 and 33,312 is: 45,970.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,606.38 : 85,016.75 = 33,312 : x
  2. Step 2: Convert to fraction form
    61,606.38/85,016.75 = 33,312/x
  3. Step 3: Cross multiply
    61,606.38x = 85,016.75 × 33,312
  4. Step 4: Simplify right side
    61,606.38x = 2,832,077,809.44
  5. Step 5: Solve for x
    x = 2,832,077,809.44/61,606.38
  6. Step 6: Final answer
    x = 45,970.53

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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.