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Finding the Fourth Proportional to 71,326.80, 98,430.79 and 41,111.88

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Solution

The fourth proportional to 71,326.80, 98,430.79 and 41,111.88 is: 56,734.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,326.80 : 98,430.79 = 41,111.88 : x
  2. Step 2: Convert to fraction form
    71,326.80/98,430.79 = 41,111.88/x
  3. Step 3: Cross multiply
    71,326.80x = 98,430.79 × 41,111.88
  4. Step 4: Simplify right side
    71,326.80x = 4,046,674,826.79
  5. Step 5: Solve for x
    x = 4,046,674,826.79/71,326.80
  6. Step 6: Final answer
    x = 56,734.28

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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.