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Finding the Fourth Proportional to 78,610.81, 108,519.48 and 46,335.25

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Solution

The fourth proportional to 78,610.81, 108,519.48 and 46,335.25 is: 63,964.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,610.81 : 108,519.48 = 46,335.25 : x
  2. Step 2: Convert to fraction form
    78,610.81/108,519.48 = 46,335.25/x
  3. Step 3: Cross multiply
    78,610.81x = 108,519.48 × 46,335.25
  4. Step 4: Simplify right side
    78,610.81x = 5,028,277,235.67
  5. Step 5: Solve for x
    x = 5,028,277,235.67/78,610.81
  6. Step 6: Final answer
    x = 63,964.20

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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.