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Finding the Fourth Proportional to 78,505.26, 108,340.11 and 44,977.74

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Solution

The fourth proportional to 78,505.26, 108,340.11 and 44,977.74 is: 62,070.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,505.26 : 108,340.11 = 44,977.74 : x
  2. Step 2: Convert to fraction form
    78,505.26/108,340.11 = 44,977.74/x
  3. Step 3: Cross multiply
    78,505.26x = 108,340.11 × 44,977.74
  4. Step 4: Simplify right side
    78,505.26x = 4,872,893,299.15
  5. Step 5: Solve for x
    x = 4,872,893,299.15/78,505.26
  6. Step 6: Final answer
    x = 62,070.91

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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.