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Finding the Fourth Proportional to 73,879.29, 110,802.74 and 21,277.35

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Solution

The fourth proportional to 73,879.29, 110,802.74 and 21,277.35 is: 31,911.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,879.29 : 110,802.74 = 21,277.35 : x
  2. Step 2: Convert to fraction form
    73,879.29/110,802.74 = 21,277.35/x
  3. Step 3: Cross multiply
    73,879.29x = 110,802.74 × 21,277.35
  4. Step 4: Simplify right side
    73,879.29x = 2,357,588,573.55
  5. Step 5: Solve for x
    x = 2,357,588,573.55/73,879.29
  6. Step 6: Final answer
    x = 31,911.36

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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.