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Finding the Fourth Proportional to 78,466.67, 108,281.73 and 44,478.29

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Solution

The fourth proportional to 78,466.67, 108,281.73 and 44,478.29 is: 61,378.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,466.67 : 108,281.73 = 44,478.29 : x
  2. Step 2: Convert to fraction form
    78,466.67/108,281.73 = 44,478.29/x
  3. Step 3: Cross multiply
    78,466.67x = 108,281.73 × 44,478.29
  4. Step 4: Simplify right side
    78,466.67x = 4,816,186,188.64
  5. Step 5: Solve for x
    x = 4,816,186,188.64/78,466.67
  6. Step 6: Final answer
    x = 61,378.75

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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.