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Finding the Fourth Proportional to 71,383.74, 98,472.71 and 48,405.79

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Solution

The fourth proportional to 71,383.74, 98,472.71 and 48,405.79 is: 66,775.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,383.74 : 98,472.71 = 48,405.79 : x
  2. Step 2: Convert to fraction form
    71,383.74/98,472.71 = 48,405.79/x
  3. Step 3: Cross multiply
    71,383.74x = 98,472.71 × 48,405.79
  4. Step 4: Simplify right side
    71,383.74x = 4,766,649,199.98
  5. Step 5: Solve for x
    x = 4,766,649,199.98/71,383.74
  6. Step 6: Final answer
    x = 66,775.00

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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.