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Finding the Fourth Proportional to 78,040.80, 107,694 and 44,050.50

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Solution

The fourth proportional to 78,040.80, 107,694 and 44,050.50 is: 60,788.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,040.80 : 107,694 = 44,050.50 : x
  2. Step 2: Convert to fraction form
    78,040.80/107,694 = 44,050.50/x
  3. Step 3: Cross multiply
    78,040.80x = 107,694 × 44,050.50
  4. Step 4: Simplify right side
    78,040.80x = 4,743,974,547
  5. Step 5: Solve for x
    x = 4,743,974,547/78,040.80
  6. Step 6: Final answer
    x = 60,788.39

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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.