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Finding the Fourth Proportional to 71,415.44, 98,559.06 and 39,594.50

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Solution

The fourth proportional to 71,415.44, 98,559.06 and 39,594.50 is: 54,643.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,415.44 : 98,559.06 = 39,594.50 : x
  2. Step 2: Convert to fraction form
    71,415.44/98,559.06 = 39,594.50/x
  3. Step 3: Cross multiply
    71,415.44x = 98,559.06 × 39,594.50
  4. Step 4: Simplify right side
    71,415.44x = 3,902,396,701.17
  5. Step 5: Solve for x
    x = 3,902,396,701.17/71,415.44
  6. Step 6: Final answer
    x = 54,643.60

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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.