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Finding the Fourth Proportional to 66,707.66, 92,061.56 and 38,028

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Solution

The fourth proportional to 66,707.66, 92,061.56 and 38,028 is: 52,481.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,707.66 : 92,061.56 = 38,028 : x
  2. Step 2: Convert to fraction form
    66,707.66/92,061.56 = 38,028/x
  3. Step 3: Cross multiply
    66,707.66x = 92,061.56 × 38,028
  4. Step 4: Simplify right side
    66,707.66x = 3,500,917,003.68
  5. Step 5: Solve for x
    x = 3,500,917,003.68/66,707.66
  6. Step 6: Final answer
    x = 52,481.48

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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.