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Finding the Fourth Proportional to 71,376.49, 98,498.28 and 39,544.75

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Solution

The fourth proportional to 71,376.49, 98,498.28 and 39,544.75 is: 54,571.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,376.49 : 98,498.28 = 39,544.75 : x
  2. Step 2: Convert to fraction form
    71,376.49/98,498.28 = 39,544.75/x
  3. Step 3: Cross multiply
    71,376.49x = 98,498.28 × 39,544.75
  4. Step 4: Simplify right side
    71,376.49x = 3,895,089,858.03
  5. Step 5: Solve for x
    x = 3,895,089,858.03/71,376.49
  6. Step 6: Final answer
    x = 54,571.05

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1.5x scale

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.