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Finding the Fourth Proportional to 65,764.42, 98,646.66 and 61,040.50

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Solution

The fourth proportional to 65,764.42, 98,646.66 and 61,040.50 is: 91,560.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,764.42 : 98,646.66 = 61,040.50 : x
  2. Step 2: Convert to fraction form
    65,764.42/98,646.66 = 61,040.50/x
  3. Step 3: Cross multiply
    65,764.42x = 98,646.66 × 61,040.50
  4. Step 4: Simplify right side
    65,764.42x = 6,021,441,449.73
  5. Step 5: Solve for x
    x = 6,021,441,449.73/65,764.42
  6. Step 6: Final answer
    x = 91,560.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.