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Finding the Fourth Proportional to 78,911.40, 108,907.10 and 44,928.06

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Solution

The fourth proportional to 78,911.40, 108,907.10 and 44,928.06 is: 62,006.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,911.40 : 108,907.10 = 44,928.06 : x
  2. Step 2: Convert to fraction form
    78,911.40/108,907.10 = 44,928.06/x
  3. Step 3: Cross multiply
    78,911.40x = 108,907.10 × 44,928.06
  4. Step 4: Simplify right side
    78,911.40x = 4,892,984,723.23
  5. Step 5: Solve for x
    x = 4,892,984,723.23/78,911.40
  6. Step 6: Final answer
    x = 62,006.06

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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.