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Finding the Fourth Proportional to 104,071.64, 143,619.28 and 56,324.97

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Solution

The fourth proportional to 104,071.64, 143,619.28 and 56,324.97 is: 77,728.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,071.64 : 143,619.28 = 56,324.97 : x
  2. Step 2: Convert to fraction form
    104,071.64/143,619.28 = 56,324.97/x
  3. Step 3: Cross multiply
    104,071.64x = 143,619.28 × 56,324.97
  4. Step 4: Simplify right side
    104,071.64x = 8,089,351,496.61
  5. Step 5: Solve for x
    x = 8,089,351,496.61/104,071.64
  6. Step 6: Final answer
    x = 77,728.69

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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.