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Finding the Fourth Proportional to 78,889.90, 108,868.66 and 44,900.98

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Solution

The fourth proportional to 78,889.90, 108,868.66 and 44,900.98 is: 61,963.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,889.90 : 108,868.66 = 44,900.98 : x
  2. Step 2: Convert to fraction form
    78,889.90/108,868.66 = 44,900.98/x
  3. Step 3: Cross multiply
    78,889.90x = 108,868.66 × 44,900.98
  4. Step 4: Simplify right side
    78,889.90x = 4,888,309,525.29
  5. Step 5: Solve for x
    x = 4,888,309,525.29/78,889.90
  6. Step 6: Final answer
    x = 61,963.69

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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.