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Finding the Fourth Proportional to 78,851.15, 108,810.78 and 44,856.43

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Solution

The fourth proportional to 78,851.15, 108,810.78 and 44,856.43 is: 61,899.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,851.15 : 108,810.78 = 44,856.43 : x
  2. Step 2: Convert to fraction form
    78,851.15/108,810.78 = 44,856.43/x
  3. Step 3: Cross multiply
    78,851.15x = 108,810.78 × 44,856.43
  4. Step 4: Simplify right side
    78,851.15x = 4,880,863,136.32
  5. Step 5: Solve for x
    x = 4,880,863,136.32/78,851.15
  6. Step 6: Final answer
    x = 61,899.71

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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.