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Finding the Fourth Proportional to 61,879.51, 85,393.71 and 33,585.20

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Solution

The fourth proportional to 61,879.51, 85,393.71 and 33,585.20 is: 46,347.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,879.51 : 85,393.71 = 33,585.20 : x
  2. Step 2: Convert to fraction form
    61,879.51/85,393.71 = 33,585.20/x
  3. Step 3: Cross multiply
    61,879.51x = 85,393.71 × 33,585.20
  4. Step 4: Simplify right side
    61,879.51x = 2,867,964,829.09
  5. Step 5: Solve for x
    x = 2,867,964,829.09/61,879.51
  6. Step 6: Final answer
    x = 46,347.57

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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.