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Finding the Fourth Proportional to 71,454.84, 98,611.62 and 39,623.05

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Solution

The fourth proportional to 71,454.84, 98,611.62 and 39,623.05 is: 54,682.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,454.84 : 98,611.62 = 39,623.05 : x
  2. Step 2: Convert to fraction form
    71,454.84/98,611.62 = 39,623.05/x
  3. Step 3: Cross multiply
    71,454.84x = 98,611.62 × 39,623.05
  4. Step 4: Simplify right side
    71,454.84x = 3,907,293,124.52
  5. Step 5: Solve for x
    x = 3,907,293,124.52/71,454.84
  6. Step 6: Final answer
    x = 54,682.00

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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.