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Finding the Fourth Proportional to 66,978.74, 100,483.44 and 29,034.36

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Solution

The fourth proportional to 66,978.74, 100,483.44 and 29,034.36 is: 43,558.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,978.74 : 100,483.44 = 29,034.36 : x
  2. Step 2: Convert to fraction form
    66,978.74/100,483.44 = 29,034.36/x
  3. Step 3: Cross multiply
    66,978.74x = 100,483.44 × 29,034.36
  4. Step 4: Simplify right side
    66,978.74x = 2,917,472,371.00
  5. Step 5: Solve for x
    x = 2,917,472,371.00/66,978.74
  6. Step 6: Final answer
    x = 43,558.19

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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.