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Finding the Fourth Proportional to 61,785.56, 85,264.18 and 33,491.32

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Solution

The fourth proportional to 61,785.56, 85,264.18 and 33,491.32 is: 46,218.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,785.56 : 85,264.18 = 33,491.32 : x
  2. Step 2: Convert to fraction form
    61,785.56/85,264.18 = 33,491.32/x
  3. Step 3: Cross multiply
    61,785.56x = 85,264.18 × 33,491.32
  4. Step 4: Simplify right side
    61,785.56x = 2,855,609,936.92
  5. Step 5: Solve for x
    x = 2,855,609,936.92/61,785.56
  6. Step 6: Final answer
    x = 46,218.08

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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.