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Finding the Fourth Proportional to 61,610.71, 85,022.81 and 33,316.40

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Solution

The fourth proportional to 61,610.71, 85,022.81 and 33,316.40 is: 45,976.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,610.71 : 85,022.81 = 33,316.40 : x
  2. Step 2: Convert to fraction form
    61,610.71/85,022.81 = 33,316.40/x
  3. Step 3: Cross multiply
    61,610.71x = 85,022.81 × 33,316.40
  4. Step 4: Simplify right side
    61,610.71x = 2,832,653,947.08
  5. Step 5: Solve for x
    x = 2,832,653,947.08/61,610.71
  6. Step 6: Final answer
    x = 45,976.65

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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.