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Finding the Fourth Proportional to 78,771.22, 108,699.94 and 44,774.98

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Solution

The fourth proportional to 78,771.22, 108,699.94 and 44,774.98 is: 61,787.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,771.22 : 108,699.94 = 44,774.98 : x
  2. Step 2: Convert to fraction form
    78,771.22/108,699.94 = 44,774.98/x
  3. Step 3: Cross multiply
    78,771.22x = 108,699.94 × 44,774.98
  4. Step 4: Simplify right side
    78,771.22x = 4,867,037,639.50
  5. Step 5: Solve for x
    x = 4,867,037,639.50/78,771.22
  6. Step 6: Final answer
    x = 61,787.00

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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.